I personally would take the camping trip. Think it would be a wonderful opportunity to get away & you may really get something out of the Easter even though you aren't Christian....you might really get something of value out of that trip.

Understand wanting to be at your friend's house warming....but not liking to be around the alcohol & some times parties can be more stressful than a long relaxing weekend camping in the country. Your longer camping weekend may in it's own way be more comfortable for you. For me, just being out in nature even though maybe not so familiar with the Christianity, you may find that it really has a lot to offer you in more ways than you might think. IMO