If the pots are significantly bigger, it's not because of 9-handedness, it's because of opponent shitiness. I don't see how one less player will magically promote tons of action. I play on Full Tilt a lot, which only has 9max for full tables, and there isn't any strategy adjustment I make just for a 9-handed game.

You should play differently when pots are larger as opposed to smaller. But I would need to know what type of game it is (passive or aggressive) to give accurate advice on how to adjust strategy.