Celebrating in The Sims Bustin' Out: No Party System Exists

The Sims Bustin' Out (console) has no "party" interaction or event system. You cannot host a formal party for a new membership or any other occasion—the feature simply doesn't exist in this version.

Creative Ways to Celebrate In-Game

Since you can't throw a traditional party, make your own milestone moments:

• Advance career/skills: Focus your Sim on a promotion or mastering a skill—treat the reward as the celebration
• Invite friends over: Use "Call Friend" → "Invite Over." Cook a group meal, play minigames (arcade, karaoke), chat
• Redecorate: Buy new furniture, wallpaper, flooring for a "new member" vibe
• Go out: Visit a club, restaurant, or park (if unlocked) for a change of scenery
• Shopping spree: New clothes, objects, art

The game rewards progression—make the "party" a personal milestone of achievement rather than a scripted event.