Not that I am aware of. But .. it's usually best to pre-register.
Info & FAQs on BotCon & pre-registering is all there on the BotCon site. I usually like to go there often to read it over & over... basically to update my own knowledge & to answer some questions I have. If it's not there.. then Email 3H Productions, Inc.
As to Merchandise... it did take me 2 months to get my CD's. That was stated on the page for Merchandise that it can take up to 6 - 8 weeks for Merchandise to get to you. Either way, I can't complain now... I am SO enjoying the 2 CDs I bought. Well worth the wait. Despite it did start driving me nuts with anticipation.
I have held off pre-registering for BotCon thus far. I'll probably do that in May, after my B-day & hopefully, get taxes back. Will be some extra money to blow on some goodies.
I'm getting VERy excited about going to BotCon. I've been wanting to go to one for some time. Pormised myself I would go to one if David Kaye was going to be a guest there. Low & behold... he's a guest at Chicago. LOL, I'm going to skip going to a re-enactment in Indianapolis to go to BotCon.
Hope to see a few peeps from this board at BotCon.