Invite guests early, and impose RSVP.
Invite your guests at least two weeks in advance. Encourage your invitees to confirm whether or not they’re attending. Write RSVP and your number on the invitation.
Having a guest list and a confirmation on their attendance will help you predetermine all the other stuff, such as the amount of food and drinks you need to order, the number of seats you need, the type of entertainment you’ll provide, the date and time of the party, etcetera, etcetera. It’s one of the most important party planning tips.
Serve great food and a bounty of drinks.
Even if Katy Perry or Bruno Mars don’t agree to attend your birthday party, having great food and a bounty of drinks almost assures you that your party is at least 80 per cent successful. In most gatherings, guests tend to remember how good or disappointing the food is. If they love the food, they’ll flood you with incantations and ask who cooked it or where you ordered it from. You’ll know your guests love what you’ve served if you have to keep refilling the platters every 15 minutes or so. Keep your guests stuffed, and they’re happy. Make them happy, and your party’s a success.
Consider your floor area.
Do you really have enough space in your studio apartment to accommodate 50 people? Do you have enough chairs or standing room at least? You have to consider whether or not all of your guests will fit comfortably in your house. Otherwise, you give them the prerogative to leave the moment they realize that there’s just no way they can force their way into that mob. If you don’t have enough space, better not have the party at home. Rent out a venue or hold it at someone else’s place instead.