The play gets a little tougher to beat at these tables than the short handed tables but the potential earnings are also high due to larger pots. The best playing style for these tables is tight aggressive. You should know what mildly tight means so it is not very hard to figure out what tight means. Tight players tend to only call the flop with solid hands such as 10-K, J-Q, Q-A..ect and all pocket pairs. Once again it will depend on your position and the type of players you are playing.
A full ring table ( 7-10 players ) at medium stakes tables tend to have many about a 50/50 mix of tight players and loose players. The more loose players the better your odds of winning are. In an average hand there are usually 3-4 players calling the flop. The average hand strength of your opponents will be decent so do not bluff too much because players will call all the way to the river will hands like middle pair.
At these tables there will be a lot of semi bluffs. You should pay close attention to how each player plays and take notes. You should have each player figured out after about 30 minutes of play.