[Solitare]

You say the tournament is going to have 20+ people. I'm going to speculate that the tournament is only going to have 3-5 tables. If this is the case, it is not going to be that much different than a single table tournament.

This will particularly be the case if the stacks are not deep and the blinds are increasing quickly, as they do in the STTs.

I'd play your seame tight game, becoming looser as the blinds increase and the number of people at the table decrease. Look for stealing opportunities as the blinds increase.

One place where your STT experience will help you alot in a 3-5 table tourney is during the many times that play will be come short handed. The number of people at each table will decrease to 8 to 5 players, then the a table will be broken up and reformed.

A STTer will know how to adjust his game when the number of players decrease at the table. What will happen at a 3-5 table tournament is that the game will shift back and forth between short handed play and full table play. Knowing how to adjust for these changes, and take advantage of players that don't adjust, is a BIG skill for success at 3-5 table tourneys.