what is the most important to you about a pool hall?
As a poolroom owner / manager for 22+ in a rural location, it's not easy, but here are some musts in no particular order:
Location
Some level of commitment to advertising - particularly in the early years
Quality Equipment - tables, cloth, balls, lighting, even nice house cues
Daily maintenance to keep above equipment in top condition
Commitment to Customer Service / friendly and competent employees
Employees always making regular customers feel special and wanted
Keeping regular consistent hours of operation - a minimum of 70+ hours a week
Cleanliness / Upkeep of the entire facility including restrooms and entire playing area
A good value food and beverage operation, serving a consistent quality product, with a bar with seating area separate from the pool table area
A food/bev operation good enough to attract regulars who just come to eat/drink and not play pool
Reasonable prices for pool play including special rates for low demand periods
Weekly leagues and/or tournaments for the more competitive regulars
Attractive exterior with convenient and safe parking for customers
At least some TVs for viewing of popular sporting events, and music playing regularly at a reasonable volume - jukebox, pandora, or whatever
Fostering and maintaining an environment where all levels of pool players from beginners, females and kids to "A" level players feel comfortable and not intimidated playing here
Someone on premises who can offer novice players who have a desire to improve and to work on their games some instruction / tips and suggest appropriate videos / books for them to check out
When a novice player is doing something out of line like a scoop jump shot or setting a drink on a table, having the tact to discreetly and politely as possible handle it and educate them
Most importantly - an owner/manager who values and respects all his/her customers and employees, is a passionate pool player, and has enough pride in his/her facility to have the incentive to maintain all of the above
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I'm sure there are more I may think to add, but that's a start