Does the recommendation have to be issued in the state of California or could I use my Colorado state recommendation since I’m visiting

Has to be California issued.

You can use your recommendation if it's a licensed State cannabis card yes you can use it at the Barbary Coast but as an advisement I would say go ahead and get another cannabis card in California and then that way you will solve all your problems in the long run you might come across a couple clubs that won't take the Colorado ID for cannabis but if you are on the computer you're on the computer Nationwide so I don't see why there should be a problem PS there might be a problem and delay but you should be able to use your card as long as you have ID with it

THAT

Has to be California, you can have out of state license but recommendation has to be Cali. Or just wait like 14 days and dispensaries will start being open to the public.

You have to have California card

If tou use your Colorado papers. Make sure you have your papers, card, and ID