L.D.
Hi J., I actually agree with Nora. If my husband and I go out for a few hours, we typically pay $40 for the evening. But if it's overnight, which we have yet to do (lol), I would probably pay about $100-$150. I guess it really depends on how long you'll actually be gone. Remember, your friend may tell you if that's too much, but they may not necessarily tell you if it's not enough. So you don't want to under-estimate an amount. Good luck and have fun on your trip!