I'd say that Cedar Point is a destination park, considering it's size, the presence of Soak City and Challenge Park, and the number of resorts. Michigan's Adventures, on the other hand, I'd consider a regional park since it is much smaller, the water park is included with admission, and there are no associated resorts.
In a way, I'm glad that smaller parks are seeing a better year, because this will keep them open for further families and visitors to enjoy. Unfortunately, I haven't been able to visit any parks this season, but we are trying to plan visits in the next three weeks to very small parks (Miracle Strip and Wild Adventures) if all works out. Let's keep everyone in business -- the larger parks can afford a smaller year or two, but that could really hurt small parks.
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Po!nt of View: A different look at Roller Coasters.
http://www.crosswinds.net/~justmayntz/thrills/