That really depends on your lifestyle. Will you use the dance floor more than you would the pin-ball machine, the booths? I've done homes with dance floors for people who have ballroom, line dancing and salsa as a hobby and they constantly use their floors. But, I've had other clients who thought it would be nice to have a dance floor installed only to find that they didn't entertain much that way. Now in one home, we left the dance floor but added french bistro cafe tables and chairs that could be moved when they wanted to use the floor to dance. In the end, the decision should be based on your lifestyle and what in the end will be an extension of it.