3x/4x is fine in these comps pre ante because they usually have a terrible structure and a field of soft players that will call off with huge reverse implied and play pretty passively post. With antes though I still like to open a little smaller unless the table is still full of huge stations. Like 2,600-2,800 gives us way more room for manoeuvre. Against an unknown I'm not going to check the flop either. If I am checking I'm raising bigger simply to charge worse hands more because we're not going to achieve a fold very often in a Gala casino. We can also set up better stacks for a shove on most turns. For example if you make it 8,900 the pot is now 26k with 17k stacks behind which makes for an easy all-in.
As played I'm not sure what I'm doing on this turn. Probably check-fold because I would expect a lot of recreational players to play the turn transparently. You said he's a reg so I imagine you have some reads. We can turn our hand into a bluff on this particular river too
In a weird way it looks like you've underplayed AK here, but unless there's something you know about villain that you've not shared here then it looks like you just got unlucky here mate.
pretty much this
raise size pre is interesting. if he is going to be peeling a lot here which I assume he will be, I'd want to charge him a little more so a 3x looks good - we will be out of position and it will (or should lol) define his hand a bit better and make it easier for us on future streets
defo bet the flop for value here, he is gonna check behind so much and we'll be lost OOP on the turn