The invitations are out and many of the BlogHer parties have been completely booked for weeks and months. In fact, most are only accepting people for their wait lists. Had this not been my first BlogHer I've ever attended, I would have been all the wiser to RSVP a lot sooner. I had no idea how competitive getting party invitations could be, but have now learned my lesson for next year.
Most events, due to space limitations, have a maximum capacity. Some parties are by invitation only. Others are first-come first-served via EventBrite ticketing, while still others, like for the Dove Ice Cream Yacht Party, BlogHer attendees are asked to submit their information directly to the brand's representative and then await confirmation of an invitation.