Disposable cameras are mainly about convenience, not image quality. If you want the simplest option for guest use, they can work, but expectations should be modest.

For black-and-white, there are single-use options from Ilford. The XP2 Super single-use camera is convenient because it uses C41 processing, so many labs can handle it. Ilford HP5 Plus single-use cameras give a more traditional black-and-white look, but they need standard black-and-white processing, which is less widely available.

Using cheap reusable compact 35mm cameras gives you more control over film choice and potentially better results, but it adds cost, setup, and the risk of unreliable old cameras. Some classic compacts can produce excellent images, but they may not be cheap.

So the practical choice is: use disposables if convenience matters most; use reusable compacts only if you’re willing to test them and manage film/loading. For a wedding, colour disposable cameras or Ilford XP2 single-use cameras are probably the easiest film options.