I've only been into guns for about 3 months, so I'm still a noob, but here are my experiences, all of which took place within the past 3 months:
1. Honolulu Firearms & Range (Magnum): Bought a Glock 19 gen 4 for $591, which I know is high, but I didn't mind too much since I support buying local and they were the only store of the four I went to that had the gen 4 Glock 19. They allowed me to come back and shoot my gun at the range for free (I paid for targets and ammo) while I waited for HPD to do their thing. One of the guys there even showed me how to spray down and clean the gun after shooting. I've been to the shop a few times and was always acknowledged and asked if I needed help.
2. Young Guns: Been here three times. Each time I was asked if I needed help, though I did need to wait around and stare at stuff for a while before being asked. Workers are cool and friendly once they get around to talking to you.
3. OGC: This place is kinda every man for himself since it's always the most crowded. The last time I was there was this past Friday when they first opened after Xmas break. I went through the door right at 9AM, which is the time they showed on their website, only to find the store already packed.

Uncool. I was there to pick up a handgun. I noticed not once did any employee tell anyone who came through the door what they should do to pick up their guns, or where to stand in line for service. Everyone was just kinda wandering around asking, "Is this the end of the line?" or "Is this the line to pickup?" Many of the guns here aren't price labeled and I heard many times employees yelling across the room for price checks.
4. Windward Gun: Been here once. I was the only guy in the shop for at least 5-10 minutes and was never acknowledged until right before I was ready to walk out.