Yes—using semi-automatic modes for events is completely normal. What matters is getting consistent, usable images, not proving you shot everything in full manual.

Program mode is workable, but it gives the camera most creative control. For events, many photographers prefer:

• aperture priority when depth of field matters most
• shutter priority when freezing or showing motion matters most
• manual exposure with auto ISO when you want to lock shutter speed and aperture but let the camera handle changing light

A common event approach is to choose a safe shutter speed, set the aperture based on subject/group size, and let auto ISO react to light changes. That can be faster and more consistent than fully manual in rapidly changing conditions.

Experience absolutely helps. As you shoot more events, you’ll get quicker at anticipating lighting changes and choosing settings.

If possible, some photographers also carry two cameras: one set up more automatically for quick, unmissable moments, and another configured for more deliberate shots.

Bottom line: use the mode that gives you the results you need, while keeping enough control over shutter speed, aperture, and ISO for the look you want.