Unlimited Bowling 9PM to Close for just $15 person, that includes shoe rental. If you have your own shoes it's still $15 per person. 300 has all their balls behind the counter. You just ask for the weight and finger hole size you want and they'll hand it to you. No need to go searching the racks for a tolerable ball.
If you are unfamiliar with 300 it is an upscale bowling alley with food & drink service to your lane. They keep the place dark and have large screen TVs above every lane. The music pumps while the music video plays on half the TVs. It is a party atmosphere.
Sometimes 300 rents out the entire building to a large group. If that happens we will move this event over to Bowl America at 1101 Clopper Road Gaithersburg, MD 20878. It's possible that we don't know until 7PM that we need to move the event. If we do I'll post it as a comment on this event. If that happens we will be gathered near the counter at Bowl America with our meetup sign in hand until we get assigned lanes, which is typically at 9:15-9:30PM.