My own, using our happy cups for my own wedding was a great way to put the icing on the cake as it were. They went down a treat with all the guests and we still all use them to this very day as great mementos.
Happy, fun, sustainable, practical, brilliant.
The growth from starting with absolutely nothing and no investment into the customer caring organisation we are now that works with hundreds of events.
Start early and don't panic, it'll be alright on the night.
Biased answer but the reusable cups at a friends' wedding who had personalised each one with the guests' individual name as part of the seating plan.
We supply all our happy couples with reusable cups. We make it as simple as possible and ask them for their artwork and ideas, then create a design which once approved gets printed and we deliver them.
I'm a terrible chef so not sure there would be much wowing going on, I'd try and keep it simple yet effective so a steak with peppercorn sauce and some nice veg.
Reusable cups of course!