First take courage from this Sam Sifton (NYTbfood editor) interview. Near the end he gives 3 points of TG advice. Paraphrasing: 1) it will all be fine 2) you need more butter than you think and 3) not the time to discuss curren issues. I did most of mine as buffet which would work with your space set-up and allow you to provide an array that has "something for everyone". My solution to beverages has been "bring whatever you would like to drink". Always had a happy crowd.