make a party—arrange a social gathering, especially of invited guests at a private house:
- Every evening there is somewhere in this building a party. And if there wouldn’t be any, you be sure we invent a reason to make a party!
make up a party—form a group of people for purposes of entertainment, recreation, etc.:
- We do require that you pay for the trip in advance; however, your money will be refunded if we are unable to make up a party, or if the trip is canceled.