Sounds pretty extravagant to me! Hell, I don't even know what a Cellar party IS! I wouldn't attend either if it was my wedding anniversary....not that I'd even use that as an excuse.

Obviously your best friend is very excited about getting married and wants to share as much of all of it with as many people as she can. That's OK I guess, each to their own. I guess being there with her at the important bits is what should really count to her in the end