When I have visited my friends in other states, whether they asked me to come see them or I asked f I could come visit, I paid my way and tried to treat them to something to thank them for hosting me. My feeling was, if I couldn’t afford this trip, I wouldn’t be here. I also learned a lesson early on that even though I may be on vacation, my hosting friend isn’t. This is their home, their life, their town and if I want constant entertainment and tourist type things, I will stay in a hotel and ask if they can meet up for dinner one of those nights. They are not obligated to host and entertain, I am not obligated to pretend to be excited about going with them to their local grocery store and sleeping on their couch, when what I really want is to go to the cutie little downtown and go out to restraunts I would normally never go to. They need to be understanding! Did they come to see you, or see the sights? If it’s really about the sights, that’s OK, they just need to be honest with themselves and you and fork up the cash on their own.

When people invite themselves or ask to stay at your place, my feeling is, they get what they get and don’t throw a fit. That means if they invite themselves at an inconvienient time for YOU, the host, whether it be time wise or financially, then they expect nothing. If all you have is a blow up bed and all the time you have is after work at dinner time, well, they invited themselves so that was the risk they took. You would be kind to direct them to fun things to do while you are away at work, or at least go out to one fun place with them while they are there, if you can, but if you have told them it was a bad time and they insist on coming, first of all, shame on them and second of all, you have no obligation to pay for them.

it sounds like they invited themselves to stay at your place free and either you didn’t protest, or they didn’t listen when you told them it was a bad time. so for this time, direct them to fun activities, offer to drop them off or whatever, but DO NOT continue to shell out everything. It’s the oppositte, they should treat YOU,their host to dinner at the end of the trip or give you a hostess gift.From this point on, say, "I am sorry we didn’t make this clear earlier, but I am working alot right now and won’t be able to go out to amusement park/dinner/movies, but I am happy to give you directions/bus info/a ride when possible and maybe we can make a meal together at the house one of these nights before you leave."

In the future, if it’s a bad time, be clear, say, "This isn’t a good time for us. You are welcome to use our guest room so you can save money on a hotel, but we will be busy working, so we probably won’t be able to go out very much. We would be happy to give you a quick tour and show you how to get to some great places on your own."

Good luck!
References :
travel
visiting people in several other states
live in a tourist town

It’s one thing to crash on a relative’s floor or want to spend time with them, but if they want to go out every day, then they need to be covering their own costs. You’re doing enough by saving them the cost of a hotel. If you want to treat them to dinner one night, that would be kind of you, but you do need to put a stop to this. If you don’t, they’ll come back sooner or later and expect another free vacation. It’s not fair to you.

If you’re afraid of offending them, then simply suggest eating in (and maybe asking them to chip in with the groceries). If they press the issue, tell them you can’t afford to cover the cost of dining out like that. Also, gently remind them that you do need to work to earn a living, and suggest that on the days you have to get something done, they can go to the amusement parks (and other expensive places). That way, they won’t be bored, and you won’t have to pay to go with them (and speak with your children in advance, so they won’t get upset in front of your relatives, who might push the issue just for that). Tell them the cost of the tickets in advance, and then ask if they need to run to the bank in order to have enough cash. If they still don’t pick up the hint, then nothing will get through to them, and it’s time to be very blunt.

I know it seems a little harsh, but really, it isn’t good for your relationship if you start resenting them…which you will. Trust me, I’ve been there. I had relatives come from Africa and stay for a solid month, and they behaved the same way. They demanded expensive foods that even I never buy, tickets to amusement parks, gas for their expensive rental…it was absolutely ridiculous and quickly became offensive. I put up with it for a week, because I love them and didn’t want their time with me to be tense, but they just became increasingly worse over time. And when they came back a year later, they expected all of the same. Believe me, you need to put a stop to it now. If not for your own sake, then for theirs–because they really can’t go through life treating others this way.
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Please, dispose of these waste products immediate;y!
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Let them know that your kitchen is theirs to use if they wish to cook. Leave them information about the area so they can pick restaurants.

If need be, let them know your budget will accommodate them staying with you but they will need to feed and entertain themselves. That’s totally ok to say!
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I work from home and have a little one- you’d be amazed how many of his friends parents think one more would be fine in a day!!

Your relatives should know better. Teach them if you need to.

Asked you to pay for the hotel on the way and back? That is WAY over the boundaries of normal. Is it that you were able to provide this previously and they have an expectation? If so, let them know things are tight and business isn’t what it used to be.