Does your friend have OCD for opening and closing it a lot? I wouldn't stress over your cigars too much. They hold their own unless it's a DRASTIC change in humidity and/or temperature.

Whenever I get new sticks or need to play cigar tetris to fit the new sticks in my coolidor, I normally have it open for a prolonged amount of time and close it, and then open it again to see if I have more room for more sticks.

Plus, hopefully you'll be smoking the sticks in the humidor/coolidor in the near future. If you are trying to age certain cigars, that may get affected by the constant opening and closing, but are you up to that point yet?

Andrew