You should hire a bartender for a home party and you should also hire a bartender for a private party. You should hire a bartender for any occasion that involves having some sauce served in a chilled glass. The reason is, you want to celebrate and have a good time at your own event. You don't want to be the one trying to learn to pour drinks or having a friend or family member try to hash it out the best they can and make some weak margaritas. The least stressful arrangement is the best one.
Now when you hire professional
bartending services, your party just got kicked up a notch and your guests will be completely impressed and also relieved that they will actually be able to detect alcohol in their drinks instead of just tasting mixer.