Some time ago DH's parents took it upon themselves to buy a family-sized tent, with separate bedroom areas, in the belief that it would be fun if DH, DD and I all go camping together when we're back in the UK. We live overseas. The first we heard of this idea was AFTER they'd bought the tent. We've managed to avoid the camping thing until now.
However, we're going to visit them for a week in August and they've suggested to DH that it would be a great opportunity to go to a campsite in the New Forest for 2-3 days to test out the tent. DH hates the idea of camping but is willing to go for the sake of his parents. I'm happy to camp for a couple of nights but have massive reservations about sharing a tent with my in-laws. Both of them can be difficult and inevitably during our visits there are times when I (and DH) need to walk away and take deep breaths to prevent an argument. We're both pretty easy-going and try to avoid confrontation wherever possible.
I want to say that we'll go camping with them BUT that we'll want our own tent so we can have some privacy. I'd be happy for DD to stay with them, although she might prefer to be with us in our tent when we get there. I know that they'll be very upset by this as they've already gone to the expense of buying a very large tent to accommodate us all. Am I being unreasonable? Or should I just grin and bear it, knowing that it's just a couple of days? DH is willing to go along with whatever I decide.