Celebration cakes are very difficult to give exact portions as it really depends on how generous you want to be so these figures are based on the average you could get out of one cake, as they are calculated different from wedding cake portions because there is no standard size.
Please note our cakes are taller than the average cake so you can give out taller slim slices.
So just as a guideline this is what roughly you can get out of your celebration cake (these are based on tall slim slices).
6" - 12 -15 portions
8" - 20 - 35 portions
10" - 35 - 45 portions
12" - 45 - 65 portions
14" - 65 - 80 portions