Take a look. This will give you an idea of how to set-up a buffet table anywhere

Use two tables if necessary.  

One small table?  Use smaller serving pieces and replenish food often.  

Several small tables?  Set-up one table with salads, one with the main entree, one with side dishes - you get the idea

No space or available tables?  Set up the party food dishes on your kitchen table, cleared counters, stove, or wherever you have a line of continuous space.  Try to stick to the order as shown above to keep everything moving smoothly.   

No one likes to juggle a full plate of food and hold utensils and drinks at the same time.  Keep utensils and the like at the end of the buffet and provide a little space to temporarily park plates that are full of your delicious goodies.