We're going camping this week so I'm in the same boat. I thought I'd do a green week to keep the cost down but also because I can take packets and tins instead of having to buy fresh each day without a fridge. We'll be in a tent next to the in-laws caravan so have use of the stove and kettle. I'm taking chickpea dahl to heat up with a tin of mushrooms, packets of couscous and pasta n sauce. I'll take some Alpen lights, ryvita and cheese triangles which can live out of the fridge if needed for my HE's. Their fridge is tiny so not much room for yogurts and cottage cheese which I normally eat a lot of so we'll see how I cope. If I get desperate for a change I'll grab some cooked chicken from a local shop and a bag of salad.
Have fun!