That is what I was thinking. In fact, I got talking to my partner about shooting with film. It is scary!
We now have the luxury of reviewing our results immediately - histograms, highlight view, delete, shoot again. I have no knowledge of how to judge light - I aim and meter in camera, shoot a test shot and check the histogram, the highlights, and the overall appearance in the review screen. I then make adjustments based on that and start over. Repeat until it appears OK - I then shoot only until conditions change, when I start all over again.
I can't imagine shooting a wedding on film! Too much depends on getting it right, and yet - I started out, years ago, with film and a built in meter. I suppose I then too did some of the same things: metered for what I wanted to be correctly exposed, but had not way to check until the roll were developed. Just continued shooting and hoping for the best. And somehow my photos came out more or less correctly exposed!
Digital allows you so much freedom, it feels like cheating!