[Mitke]

Flop: easy call on odds.

Turn: you are way behind against another ace but way ahead any other pair. Bet for value and to protect against FDs & smaller pairs.

River: Better aces aren't very likely. AT-AQ would probably have raised the turn in this big-ish multiway pot and likewise we'd have heard from AK preflop. Without reads it's hard to say would the villains call with something like T9, J9, 88 - an overcall with those holdings is probably out of the question.

I'd bet. Given the turn I'm not very worried about a c/r from a better ace or a bluff c/r either: the river card is no scarecard to anyone here and thus not likely prompt a bluff. I think we can extract more value from hopefully getting crying calls (with a small pocket pair or 9) than we'd end up losing paying a better ace or something weird like a set.