Getting hyped to roll with my crew again. I'm afraid the NGPC bug will bite me again this year (grabbed an extra Crystal NGPC from Mad Gear two shows ago), but whatever happens, I know it'll be a good time as it always is. As far as Sheraton vs Olympia, I thought that the Olympia was a more comfortable venue, whereas the Sheraton felt kind of...disjointed, what with vendors on the first floor and the museum on what was practically the opposite end of the building. Still, MGC grows every year and we kind of outgrew the Olympia, so it had to happen.
Also, if you only attend for one day, make it Saturday. Height of the shows and the day that vendors bring out the majority of their wares.