Be very careful to ensure that you get a good "bond" between the allen socket and the seat bolt. If the seat has never been removed, you risk rounding the allen portion of the bolt as they are really torqued down. If you do strip the bolt, you now have more issues to deal with. Makes sure you "seat" the allen socket into the bolt and take your time. You may want to consider buying some new bolts from Sunset or another dealer so you can have fresh replacements ready if you happen to damage any existing bolts during removal. If you are able to remove all the bolts, and you slightly damage any of them, they will just be that much more prone to further damage if you have to remove them again. Overall, the bolts aren't terribly expensive, so I replaced all of mine when I had to replace a seat motor.
Upon reassembly, make sure you use the original washers (if any) that were with the bolts. Don't substitute other washers. If you do, you run the risk of having the seat stick on the raised bolt head due to a potentiall thicker washer which has raised the bolt head. This also creates other issues that are not fun to deal with. Don't ask me how I know....
Also, the stock seats are heavy and bulky. Place a blanket or towel over your sills to help protect them when you remove the seats from the car.
Other than that, as others have said, seat removal is very simple.
