Yes... you can trademark different things, and the drink obviously has nothing to do with the roller coaster. However, one of the things that Cedar Point is trying to trademark is the merchandise (shirts, key chains, etc.). That would effectively stop the drink maker to produce that kind of merchandise.
As a matter of fact, while I do business as "POP World Media(TM)," a company in the UK does business as PopWorld Ltd. I build web sites, they do pop music promotion (and paid handsomely for my old domain name, popworld.com).
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Jeff
Webmaster/Guide to The Point
Millennium Force laps: 27