My wife and I have gotten surprisingly good film from Kodak, Fuji and generic disposable cameras. She prefers to buy and use them on vacation and mail them home for processing. It saves luggage space.
The generic camera(s) we used, were mostly filled with Agfa film in a re-used Kodak disposable camera, with a paste on generic paper label. The underwater camera I used was Fuji and the pictures were surprisingly good.
I like to save the batteries sometimes, as they are hardly used at all.