We were at a party last night where the Coke (etc) was left in a cool box outside the patio doors, and occasional brave souls went out to get more as required. After 10pm they were coming in with ice in, and after midnight the first too-solid-to-drink one was opened.

The soft drinks in this house are kept in the cupboard under the stairs, which has a window in it, although it is sort-of also in the very warm living room. The cans are coming out colder than if they'd been in the fridge, but just the right side of ice. Lovely. :D