This thread shows just how far we have regressed in our understanding of God and our obligations to Him. It seems all about not offending ones friends or family and gives no thought at all to offending God by not attending Mass on a Sunday, which is still required if I am not mistaken. It places ones personal recreation before ones obligation to God, which I really don’t think is a good thing to do.
I would make the following suggestion as old fashioned and out of touch with modern sensibilities as it may be. One either cut the camping trip short

by a few hours and make it to Sunday Mass or two, leave early on Sunday for Mass and then return to the campsite.

Unless you are going to someplace exceptionally remote you should be able to do this. It may be a bit of a sacrifice for you but nothing really serious.
I believe that receiving dispensation from a Priest to miss Mass is something to be used for extreme circumstances not for a camping trip which is really kind of trivial in the scheme of things.