Agreed - Sunday is a great day for shopping in the Dealer's Room, but that's about it. Saturday is the day packed with the events, and Friday is usually a good day to get stuff that might go fast in the Dealer's Room, and there are some panels and stuff that day, too.
2014 Conventions :
Katsucon (Washington, DC) - Megacon (FL) - Colossalcon (OH) - Anime Weekend Atlanta (GA)
Upcoming costumes : Yuffie from Kingdom Hearts, Princess Garnet (coronation gown) from FFIX, and more!