The bottom drawer of the fridge has always been completley satisfactory for my needs. Ther is certainly no need to freeze film.
A freezer is (should be) a constant environment controlling humidity and temperature, the bane of anything perishable, especially anything with organic compounds, even in trace amounts. Any need to freeze film depends on the alternative storage methods and time constraints.
Since there are about 30 acronyms using WIP, which one of them did you mean to refer to? I take "Weapon Impact Point" Kinda nice or perhaps "Women in Photography", as it is more on-topic.
Waste Isolation (Plant/Project/?) New Mexico or Nevada. Store atomic waste in a salt mine. This was maybe 10 years ago, possibly more. I'm sure someone will correct me. (Oh, and I do remember "Wip Inflation Now!". Just wish I had kept my lapel pin.)
Typical frost free freezers use heater element to raise the temp enough to melt the little front that builds up. It happens few times a day. So.... that means the temp inside does go up and down on regular basis. I guess THAT doesn't hurt anything?