IMHO it should be a non issue, alot of people in AZ have CW permits and carry regularly. I am gonna assume (and I know I shouldn't but for the sake of argument) that you are a responsible adult and non some gangster gun toting thug. As long as you follow the guidelines as it pertains to your permit and personally I would probably leave your weapon in your vehicle during any meetings with other caregivers. Hopefully you won't need it but you will have it available if something bad happens. This is my own view on the issue, not reading anything from any rule book or anything.....just using common sense seems to work most of the time. Just be safe when meeting folks you don't know, maybe arrive a few minutes early and patrol the area briefly for any suspicious characters and I would say take a friend with you just to sit in your vehicle and wait for you. There's always safety in numbers! Be safe!