LOVE the cake top! Like the mix of cake and cupcakes. Cupcakes + cake on top = Inexpensive wedding cake! Get the best of both worlds. Have a wedding cake to cut for photos and reduce your costs by having cupcakes for guests!
Place candles in the shape of a heart for your beach wedding . simple and sweet! I can imagine like after ceremony before reception to enjoy all night! Have guests find their place cards and light their candles!
I have also seen similar centerpieces that use epsom salts instead of sugar. You could also sprinkle a mix of pearls/gems. Sand (or sugar), faux pearls, a 3 candle. An easy DIY wedding centerpiece idea.