Melt a little marmalade in the microwave or on the stove, until it runny. Brush this over the cake, it will stick the marzipan to the cake. I find the easiest way to get the layer of marzipan draped over the cake safely is to first drape it over a rolling pin, and then roll it over the surface of the cake. Dust it with some icing sugar or cornflour first to stop it sticking.
Consider scaling back on cake slices and see if your caterer can also include a round of sweets to supplement (think: passed chocolate-covered strawberries, assorted cookies or mini truffles). Let your caterer know they should cut tasting portions to about three quarters of the usual amount, and plan to plate your cake slices with the other desserts. Ask your caterer to place slices on a buffet or cake table instead of serving a plate at every place setting—or have the staff bring bite-size pieces right to your guests on the dance floor so they can enjoy cake while getting down.
In the United States, white vanilla wedding cake(s) with white vanilla frosting(s) are currently the most popular wedding cakes, but different flavors of cakes and fillings can be added between the layers. Wedding cake flavors include chocolate, vanilla, strawberry, mocha, cappuccino, and even red velvet. Many modern cakes now consist of flavors such as vanilla sponge, chocolate sponge or carrot cake.