The ONLY thing that this would effect is States that BAN Firearms in places where Alcohol is Served for Consumption-on-premises.
Most States do not have such Prohibitions, BUT there are a few States that still have such Prohibitions.
*** The States that have such Prohibitions are: 1. Washington (in an area designed for Persons over 21 ONLY), 2. Montana (Concealed Carry Banned, Open Carry OK), 3. North Dakota, 4. Wisconsin (HandGuns Banned, LongGuns OK), 5. New Mexico, 6. Arizona (Open Carry Banned, Concealed Carry OK with exceptions), 7. Louisiana, 8. Kentucky (Loaded Firearms Illegal, Unloaded OK), 9. Maine (unless you are a 'Special Investigator'), 10. South Carolina, 11. North Carolina, 12. Ohio (Legislation to change this is pending), 13. Illinois, 14. Alaska (Concealed Carry OK as long as not Drinking Alcohol), 15. Texas (unless with a Texas CCW, that is not a Bar). ***
There may be other States with Prohibitions though.
*** Done strictly of off Memory. ***