i won my first vegas hold 'em tournament 6 years ago; i prepped years earlier by doubling a pokerstars sim account (1 to 2M i think, over many months multi-tabling)
biggest help in trading is Negreaneu's "small ball" strategy (see many flops at low cost), eg position sizing, play many w/low upfront risk. i used to be active on the excellent 2plus2 forum
favorite games in vegas = venetian, aria, ceasars ... in early years i also played mgm & bally's a lot; easy pickings; eg recognize/avoid local pros and play instead tag/tight-aggro vs drunk tourists midnight; like trading all i drink is coffee/water; trading is easier since you can 'take chips back' if you miss your draw on the turn, so to say
my biggest wins (& losses) come from long-odds plays like shoving an A-high flush on the flop/turn only to get beat by board pairing on the river & villian hitting his boat/fullhouse
bad beat story (bally's 2011): villian shoves preflop with cowboys seat4, i'm in seat9 with bullets & shove, and he hits trips on the turn, his 3 kings beat my aces, players groan/cheer... that's poker! gotta love it
yes poker & trading are totally complementary, plus fun