We paid for everything with our magicbands, but I also brought my ID, my credit card, and my insurance card, just in case. Had to show ID to buy one alcoholic drink, didn't have to show it for any others (I am WELL above drinking age, not sure if my age was shown to cast members on my account or if it was simply obvious that I'm above legal age?)
I left the bulky wallet behind and just tucked those cards into my bag or pocket, and used the Magicband for everything.