I made tied for second/third, first, and first in my games.
It was veto mode, and game 1 Village, Militia, Cellar, Witch, Woodcutter, Moat, Gardens and Library were on the board. I was going second. I vetoed Moat, in hopes that the average random Dominion player would undervalue attacks a lot so the Moat would make mine stronger. Also having a Moat to reveal at the right times seems RNG. I was correct, but not correct enough to win through 4$ t3/t4/t5/t6, player 1 bought Witch on his first 5 and never bought a Witch ever again, Player 3 never bought any attacks even though I skipped Militia in hopes he'd do it for me. In hindsight I probably should have vetoed Witch. The player who actually won wasn't player one at all, it was the Gardens player. My slow start and the 4 extra Gardens in the supply made the "counter Witch with Gardens" dream real, though with 1 fewer card in his deck he would have lost.
Rounds 2 and 3 added Seaside
Game 2 had Fishing Village, Market, Woodcutter, Smithy, Gardens, Salvager, Laboratory, and Moneylender. That was either the game I vetoed Ghost Ship to reduce first player advantage or the game I vetoed Explorer for not being a sufficiently appealing trap. I relied on a single Salvager for trashing so that the Fishing Village/Smithy deck could get good value out of the Gardens pile. Player 1 started with Moneylender, and bought a later Salvager that was mostly used to trash Provinces for Provinces and accelerate the game so my engine's score couldn't catch up. With 12 Provinces in the stack and little participation from the other player it wasn't fast enough, though. I won by about 12 points or so.
Game 3 had Wharf, Native Village, no other Villages, Bureaucrat (I remember because well someone bought one), Merchant Ship, Adventurer, Pearl Diver, and Island. Seems like maybe there was a low power-level trasher in there, but not Lookout OH!, Remodel.
Both other players opened 5/2. I feel like if you open 5/2 on this board, you buy Wharf/nothing and go straight big money, right? I would think it's probably a little bit faster than the Wharf engine can manage to get set up. Both players did open Wharf and made an immediate recognition of how powerful it was even though I was the only one who had played with it before. Unfortunately they made an immediate recognition of how powerful Pearl Diver was as well. If you DON'T get 5/2, like I did, I think the correct thing is to go engine, so that's what I did. It's also probably more correct when the other players are going to do worse than Wharf BM, and when you want to dodge the variance of missing 5$ being more tragic for the BM strategy than the engine strategy (actually, as an engine player I think I actively incited that tragedy early by opening Remodel, though it is perhaps more correct to stick with Silver until you get the first Wharf into your deck).
The funnest turn of the night is when I managed to draw 8$ and 3+buys when there were 4 Native Villages remaining and only 1 Native Village in any of my opponents' decks. So I piledrove the Native Villages to cut all the other players off from engine strategies, and made the Pearl Divers they were purchasing more painful.
Native Village turns take a little while to resolve, and it took me longer to draw my whole deck game 3 than it did game 2. One of the other players said he thought it was "boring", although I was playing rather quickly. It was at least objectively the case that I took no longer on any one action than the two or three times he went into the tank about which card to Salvage. I responded to his complaints by explaining I had to select whatever strategy seemed best for the board, and he accepted that. I wonder if whether turning point experiences such as this are what keeps Dominion from getting more tabletime at board game meetup groups like this that end up leaving Dominion in a mix of other games that are mostly lower calibur (even not including Dominion in the mix at all).
The player who organized the tournament was probably pretty good, but I never got to play him. I tied with him for first place since he had the same record. I won 12.50$, which was a profit of 7.50$. It's a lot more money than I made playing super smash bros and MtG, since those figures are negative!
