You are going to want to serve alcohol at your pool hall. For the purposes of this article I define alcohol as liquor, beer, and wine. It is the major income source for your business. Alcohol sales can be 1.5 to 2x table rental sales. Some of my consulting clients have thought of going with "alcohol free" family rooms, but its hard to make the numbers work.
With that said its crucial you understand what is involved with applying for a liquor license. Delays in getting your permit due to a missing form or incomplete application will cost you money in lost sales. At worst, not knowing the process and doing it correctly could mean your application will be declined. Not good since you will have already signed a lease.