I feel you. I appreciate when people try to help, or try to appreciate when they do things for me, even if they're small. It's easy to forget though that the people who are trying to help you, who get frustrated don't really understand depression. That's no justification to get mad that their presences somehow lacks curative properties that take all your problems away and blame you for the problem. Most of the time, people who haven't lived it, just don't really get it, even the people who are very good natured who want to help, hell who might even be educated about it in a real way. It's like trying to understand what it's like to be missing an arm, I think. You can kind of imagine it, but you're never really going to fully understand it unless it happens.
I know we don't know each other, but as one depressive to another, I'm glad you're starting to feel better and I hope you can keep the momentum going, and I hope you can work through this issue with the person/people who are making you feel this way.
I hope it's a fun trip! Camping is great, even with people you don't know that well. I don't know what helps you with any of your problems, but if you like the quiet and the calm, middle of nowhere is perfect.