I can't make marginal hands work for me from the blinds, I think my first position play is poor post-flop.

There seems to be two distinct types of cash game players. Those that will play almost anything from the SB when given good odds based on the number of limpers, and those that play really tight from the SB.

In a tournament/SNG they're are way more variables in play. Number of people at the table, size of the blinds, chip stack, etc... I play my blinds much differently in a tourney than in a cash game.