oooo interesting topic! Fiance & I are having a high tea luncheon theme for our wedding... we are having dips in cob loaves and antipasto for the first half our of drinks and then for the sit-down part (this is per person):
COLDS
a mini baguette, a petite wrap and the equivalent of a round of ribbon sandwiches
HOTS
6 pieces of hot food - sausage rolls with "bush relish", prawn & chicken kebabs & thai meatballs with chilli sauce
DESSERT BUFFET
1 piece of cafe size lemon meringue pie / tim tam cake
1 mini eclair or piece of slice or small custard tart
1 piece of wedding cake
fruit platters
coffee/tea
oh and at each place setting guests get a cupcake.

I hope it's enough food... I fully trust our caterer and she is adamant it will be fine.
I'd love to hear more about your wedding. It sounds fabulous!