I hate to be the buzz kill, but the thing you taste in the tasting will not necessarily be the wondrous cake you envsioned for your wedding day. anyone can make a cake look stunning with a slather of fondant but that doesn't mean your guests will enjoy it or that they ( the bakery you selected) can make it on a larger scale. I say, avoid all the new kids on the block (except for Bom Bon in LV) and go with a tried but true bakery. Our friends who have very high standards (having lived in France, Italy and Germany) were completely thrilled with their cake from the House of Fine Chocolates. It's old school, it's classy, they know what they're doing. I recently bought a very "special" birthday cake from somewhat newbie Angel Food on Montrose--it was the best looking cake I'd ever ordered--stunning--and at $60 it was the costliest thing I'd ever indulged in other than my own wedding cake (which was ordered in CO and not relevant here). It was inedible. Sawdust with buttercream. Thankfully the owner graciously offered me a credit, but I wished I had gone with the much less sexy and much more reliable Dinkel's for the cake.
And while I am on a rant, I have yet to meet anyone (as a guest) who enjoys/understands fondant i.e. that you're not supposed to eat it, which seems bizarre and cruel to me--here's an equisite thing but don't chew it or consume it, just peel it back. Harrumpmh. If you go with a buttercream make sure your caterer or whomever is handling the food knows that it has to be at room temp to be enjoyable. Cold butercream is not pleasant either, one might as well dip into a can of Crisco or Ponds Cold Cream.
And if all of this cake business is just making you crazy, I say, have root beer floats with local root beer and local ice cream. No one will ever forget that (and serve little cupcakes to off set the "where's the wedding cake?" comments)
good luck and congratulations in advance!
bjt
"eating is an agricultural act" wendell berry