I live in an area of pretty low elevation and I'll be vacationing for a week to an area of higher elevation. I am driving there with my acoustic. Are there any adjustments I will need to make to it (other than probably tuning it again once I'm there)? Will I need to loosen strings or anything for some reason?

I would assume it would be okay if I just leave it alone in the hard case, but I don't want to get there and have my strings broken/neck warped or anything.