Getting a california ID card has never been a challenge. Further I'll go ahead and add that i just renew get lazy and get a new rec and have used many of the popular places around los angeles and have used my passport with another state listed on it as ID for my Rec.
The system is sloppy and people dont care about
I've used non california issued IDs inside clubs as well. No need to drop names but they are pretty much the popular ones around LA. It's not just flashing a pretty smile, it's just the overall attitude towards california joke laws. When your family flies out here and they always get a REC as sovereign of their trip the industry is as silly as disney.
AS far as residency required to grow, no one is california is holding a gun to your head telling you to report your plant counts or random inspections. Same random tourist with his 40 dollar venice beach """"Doctors rec""""" cn buys as much weed and clones as they want and leave the state. Only thing stopping them is their own ethics ruler.