One of the challenges of researching casinos, is that different sources have different information. Looking at Fuller's Index Plus, Bunny's Bar has 5 listings. Since Fuller's Index concentrates on gaming licenses it could mean that there were gaps in the licensing?? Also, many Gaming Control Board records from 1948-1955 were destroyed by a fire...which made the compilation of information more challenging. Anyway...here's what I found in Fuller Plus (all listings are 2757 Las Vegas Blvd, N):

Bunny's Bar & Casino 5/21/56 - SL-21
(Bernard Karshen)
Bunny's Bar & Casino 6/22/59-3/21/61
(Bernard Karshen)
Bunny's Bar & Casino 5/1/61-1966 SL-21
(Bernard Karshen)
Bunny's Bar & Casino 8/8/66-3/31/74 SL-21
(Gerald Thomas Neary, Darwin Selley)
Bunny's Bar & Casino 4/1/74-1975? SL-21
(Marvin E. Coleman)

Mickey's Casino 6/21/78-9/17/80 SL-21-PK
(Marvin E. "Mickey" Coleman)

Poker Palace 4/1/74-
(Initially operating as Marvin "Mickey" S. Coleman's Dealing School)
Poker Palace 1/1/81- SL-21-PK
[Formerly Mickey Coleman's Dealing School & Casino]-name change
Poker Palace, The - Sports Pool 8/1/2010

-----------------------------------------------------------------------------------------
When possible, I like to try to confirm information from phone books...unfortunately we don't have many from the 1960's and newer)

here is a line copied and pasted from the July 1956 Las Vegas Phone Book:
Bunny's Bar 2757NMainNLV....................................DUdiey24607 (North Main??? I'm NOT the one who made that typo!

From the July 1969 phone book:
Bunny's Bar
2757 Las Vegas Bl North NLV.........