It's not looking good for BotCon 2014 having some 30th Anniversary Voice Actor guests...
Since FunPub leave their booking and announcing of guests late, often after they promote and sell the toys of the boxsets, another American convention on that same weekend has already announced several Gen1 Voice Actors, including Peter Cullen (Optimus, Ironhide) Gregg Berger (Grimlock, Long Haul, Outback, Jetfire), Neil Ross (Bonecrusher, Hook, Springer, Slag), Alan Oppenheimer (Warpath, Beachcomber, Seaspray), and Michael Bell (Prowl, Sideswipe, Scrapper, Swoop).
(if they were all at the one BotCon, it would be one of the best ever for guests... leaving one to wonder why FunPub can never manage a good line up of vintage guests who are clearly still doing the convention circuits)
And an update on the Hotels, FunPub claim that there are some days still free at the Sheraton (they weren't there when I looked the other day), and they will be announcing another block soon (probably at the Hilton a couple blocks away).
The three days they claim are still available are Thursday, Friday and Saturday nights, so you'd have to be checking out Sunday morning, and check in Thursday (if you are doing any tours or classes on Wed & Thurs, you'd need to stay somewhere else for two nights).