Smoking is also disallowed in public during daylight hours, but I don't believe this affects the airport. I'm sure I would have remembered from last year if that were the case !
Other than the above restrictions, Ramadan is quite a joyous and spiritual time. Like western Xmas and Easter, it is terribly commercialised ... the decorations (and sales promotions) seem to go up earlier every year
If you're visiting the region, try to visit an 'iftar' buffet dinner. This is fast-breaking meal after sunset and tends to be lavish.