I also had kegs in the freezer while I made mine. It wasn't too much of a problem because I only had the lid off for an hour or two. I simply made sure that I had everything set before I removed the lid.
Primary: Exam Brown Ale
Primary: Unknown Mead
Secondary: Matt's Saison
Carbing: Raspberry Apple Cider 333
Enjoying: Lazy Ass Orange Pale Ale, Belgian Grand Cru, Belgian Dubble, Cherry Stout, Demonstration IPA
On Deck: Black IPA