Had to read it a couple times...first I thought this was going to ruin your trip in April.
But you are just thinking of getting the refund to use that money for this trip. Well, I have heard that the refund isn't immediate, so you might not have it in hand in time for this.
But gosh...if you don't have it, you don't have it. What if you'd already converted that money you saved into, say, a Disney GiftCard. Can't return it. Can't get a refund. No money.
Isn't there someone else who can get him? Doesn't sound like you support him leaving yet anyway, perhaps he needs a bit of tough love to keep him at rehab?
Could you go and pick up your step dad and then ask him for gas money?
i would try to convince him he shouldn't leave rehab early. And what kind of gas hog do you drive??? 3hrs of driving and need to refill at 50$ a tank. I drove a F-150 to the mountains and back, about 4hrs and still had a quarter of a tank after putting 50 to fill it.
Maybe if you rent a small car for the day it'd be cheaper. Even after rental fees and filling it up.
He's been in rehab for a year??? Next April is 10 months from now, so the post is very confusing. Do you mean that you need gas $ and can't put the $ down on the room now? You've still got almost a year to re-book. I would ask him for the gas $, who paid for the rehab?
I certainly have no idea of your situation but if he's leaving rehab early, perhaps you need to give some tough love and say you are on your own. That is a serious situation that you don't want to enable him. I wouldn't even send money because that is enabling him to leave early and almost sounds like you are supporting this decision. I wouldn't let him back in your house either. But again, I don't know the whole situation. I do agree that you have YOUR money and you should do what you want with it. Your father-in-law is an adult and needs to take care of himself if he is leaving 'rehab' early.

Thursday i called and put some money down on our room for april 2nd-10th. i was really excited about it! but now i may have to call and cancel and get our money back because we have to drive to pick up DH's stepdad from rehab. he wants to leave early so he has no way back. i knew this was going to happen. i told DH before he left that he was going to call you and ask if you can pick him up. he has only been there a month and a half. now dont get me wrong, i love him and he helps out alot, esp. with cooking (cause you know there are just those days when you really dont want to cook lol). i guess i wouldnt be to upset if gas didnt shoot up. it was down to $2.32 or something around there. now we get to half a tank and it costs $50 to fill. we had set aside $100 for gas. now it looks like at least the whole $100 will go for this little road trip. it takes a little over 3 hrs there and 3 hrs back. when i had to go to another county to get my dental work done it was an hour and a half away there and hour and a half back. by the time we got back we had to fill up cause we were under half a tank. now that im really thinking about it i may have to. ugh! this sucks!man i KNEW this was going to happen!