I had a theme party (have MANY lol) where I did mini bite portions or all world cuisines and I incorporated it with mini bite portions of dishes served at Epcot in Disneyland...
will look for a couple of suggestions for you
Your game to cater a wedding

Good Luck!!!
WHOO HOO!
When's the wedding and what type of weather (in general) do you think you might have?
Are you looking for hot or cold? Only appetizer/finger foods or amin and desserts too?
What equipment do you have? chafing dishes? or not, will be renting? Crockpot , warmer plates?
Based on this info will also help me tailor what I can help you with!
WHOO HOO!
LOVE planning parties!
Over what period of time will you be serving food as it is not only the serving but how well (or not) some foods can stay out for how long with spoiling in one way or another too!
General age group of who you will be catering for and is there any dietary needs of anyone?
MOST importantly....WHAT is the budget?
Are you thinking platters of things?