I was in regional touring bands for twelve years. Maybe this is part of my bias. We played anywhere from three to five nights a week, every week. We didn't add music all that frequently but when we were in a learning phase to add a few more songs, we would schedule a few rehearsals. The vast majority of the time, our live shows were the only rehearsal we ever got. With new stuff we'd learn it on Monday and Tuesday, take it to the stage that week, mess it up, clean it up, and by Saturday night it was flawless and we never rehearsed it again.
When you're playing a lot, you don't need all that extra time, because it's baked into your schedule already....