NHC seminars

this will be my first NHC. i am very exited!
Question: are seminars by preregistration or will there be room for everyone who wants to attend or what?
also, when will the seminar schedule be posted so that i can figure out what are my must attend and what i will have to miss out on ?

The talks are all open seating. Some can get very crowded, and if you are late to it you will be standing.

Keep your eye on the NHC homepage, as the schedules should be posted soon. If not you can always see the tracks in the program. It only takes me about 2 minutes to mark off the ones I want to go to.