One theme for a 30th birthday party is a casino night theme with casino tables and equipment. Guests wear cocktail attire, and a cocktail bar is set up to serve classic drinks. Another themed idea is a luau with leis, frozen cocktails, grass skirts, coconut bras and barbecue food.
In a murder mystery party, the 30-year-old guest of honor is cast as an important character, such as a detective, and all guests in attendance receive clues and character profiles before the party. Guests arrive dressed as their characters, and the clues are analyzed along with evidence planted throughout the party space until the murderer is discovered.
A more sophisticated theme is a wine-tasting night. The host purchases a variety of wines, including some bottled the year the guest of honor came into the world. Food served includes cheese and crackers, fruit and finger foods. An acoustic jazz group plays part of the night, and the guests play games to win bottles of wine.
Another idea is to host a red carpet event at the guest of honor's favorite restaurant or a rented hall. A red carpet is laid out at the entrance, with a screened background that has the name of the person being celebrated, while photographers take pictures of the guests as they arrive. A signature cocktail is served, as well as hors d'oeuvres or a fancy dinner. A dance floor is provided, as well as a DJ or live band, for dancing after the meal is over.