Hmmm...as far as I can count...if you are not going to use the top tier...you need 5 tiers unless you have a round cake pan larger than a 16"... This is what I got off of Wilton...
http://www.wilton.com/cake/cakeprep/baking/times/party_2inch.cfm
16" = 77
14" = 63
12" = 40
10" = 28
Equals 208 servings without the top 6" cake... which is 12 servings
I would show her the numbers and let her make the decision...
http://www.wilton.com/cake/cakeprep/baking/times/party_2inch.cfm
16" = 77
14" = 63
12" = 40
10" = 28
Equals 208 servings without the top 6" cake... which is 12 servings
Those must be party size servings?
I go by wilton wedding servings, http://www.wilton.com/wedding/cakeinfo/cakedata.cfm , for pricing and servings. I cut my own wedding cakes and always have cakes left over. Here is a page from my website, showing how to cut the cake to achieve these serving numbers. Notice the size of cut cakes on the plates ... standard dessert size servings. I just cut an 8" cake at a class decorating demo on Friday, and we got 26 pieces from it.
Wilton wedding servings are:
6 - 12
8 - 24
10 - 38
12 - 56
14 - 78
16 - 100
So a 16/12/8/6 = 192. 16/12/10/6 = 206
Definitely give the bride the numbers and have her decide if she wants a little more or a little less. If you give her a choice of standard wedding or party servings, be sure you charge more for party serving size, since it's a bigger piece of cake.
Opps... You're right Debi...lol I was on the party serving sizes... 
Dang...long weekend painting walls and baking two cakes... Anyway, need to back out the 6" as it's going to be the Anniversary Cake... So I guess if you do a 16, 12, 10 that will give you 194...
Sorry about that...lol 
Pat
PS: Debi...You sure looked snazzy in your new jacket 
Thanks for all your help. 
No biggie! I know some go by party size and some go by wedding size. Too much info is rarely a 
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