I think I am answering my own question but the wilton wedding chart says it will feed 80 exactly and Earlenes says 60..Who do I beieve...This cake needs to feed 80 and only be 2 tiers as she is picking it up and I don't want to add another top layer for transport issues.
I can go bigger on the bottom if I need to...
Yep, 80 exactly. The 8" will serve 24 and the 12" will serve 56.
Thanks Mamawrobin...she also is serving other desserts also so it is not critical but I am charging her for 80 servings so to be professional I need to give her 80.