on vacation I shoot some really nice photos I would like to sell at Adobe Stock but I want to send them to my travelling companions for free.
What a license do the photos for my friends need, when I want to sell them at adobe stock, too
Your friends you give them to don't need a license. You still own the images and you can give them to whoever you want whenever you want.
So I can give my friends the photos for free without any license and nevertheless I am able to sell the photos at adobe stock?
Yes. They are still your photos. You own them, not Adobe. You can give them to as many people as you like.