Here are some tips for accommodating huge groups:
*Stimulate the senses Have music and thematic scents to inspire your guests to get into the groove.
*Take control of your lighting Controllable lighting makes your entertainment space much more variable. Here are some high-style lighting solutions listed in order of estimated cheapness: candles, dimmers, mood lighting, natural rock salt lamp.
*Proper serving dishware Not enough cups, plates, and forks can really be a bummer. If you are hosting a very large group, opt for cheap but fancy-looking plastic serving gear.
*Enough of everything Nothing is worse than running out of food or beverages in the middle of entertaining. My mom used to cook for an army even when it was just a few people.