I do not see why you should pay anything. It is SO's family camp trip. He can not afford to feed you. If he can not even afford gas money, I would not care to go. To be nice, I would buy some food items but that is it. GOOD LUCK!

I'm thinking the same thing as above. Why are you paying a 1/3...it's his idea to go camping and his family event? I would assume he is off to the store to purchase whatever his part (for the 3 of you) of food that's planned. Depending if it's everybody jointly have the same meals together as a group or if everybody individual family coming cooks/does their own thing for meals.

If you're feeling generous you (yourself) might toss in a few items like something for smores that you'd like to treat the group/your individual family to. If there's a group menu planned and some of it you can't eat or don't like but SO and SD are eating it, just not you, then you should be prepared to bring food for the meal you're eating instead (or SO pays, whatever). For example, one night group plans hamburgers and hot dogs, you don't want the fat/calories in beef burgers so you bring some turkey patties to grill for you.

I don't see why you'd be expected to pay for gas. SO's vehicle is going whether or not you're in it. If you'd desire to cheap in a bit on the gas because it's something you routinely do, then do so, but I suppose it depends on why you are chipping in to begin with.

Have a great time. It sounds fun. As for SD and unloading/breaking down camp, I won't 'ask' her, I'd just simply expect her to. Give her a handful of this and that as you unload and when tearing down give her a few direcctions on what you 'assume' she'll be doing as part of the chores everybody else is doing.

From one camper to another, just make sure you have enough wine or it will be a very, very long trip.

Before DH and I married this year, we would go cabin camping. His family, me and my gkids. Or sometimes just he and his kids. I bought the snacks I wanted and wine, when it was just him and the skids. If I brought the gkids, I would split the cost with him, and still bring the wine }:)

And everyone helps with putting up and tear down. Even when you are staying in a cabin there is a lot of work setting up and packing up. I would just say, sd13 please xyz. and ss16 why don't you xyz. They would just do it. Sometimes you need to give a teenager direction especially if she isn't normally expected to help.

We didn't live together before we were married either. So I understand what you mean about dividing the cost. I am independent and want to pay my share when we took trip together.

So cheers! and have fun.

I would chip in here and there....but I would not feel obligated to pay a certain percentage. I assume he invited you as his guest? As a guest I would offer to maybe fill his tank once when stopping for gas. Or offer to grab everyone drinks an a snack while he fills up. I would buy a special treat (dessert or wine) for the group to enjoy while camping.