I had a similar experience a season or two ago. Working with a partner that, in the past, I had worked some competitive tournament games that included HS, college, and post college players. But I had never worked a High School game with him.
I had been warned by other fellow officials (that aren't too hip about this guy's style) not to call his style of game (lots of physical play and few fouls) - to watch myself.
The day came, a highly competitive HS game working with this particular partner. Well for compatibility and consistency, I tried to call a game similar to his. It was difficult for the first quarter. But by the end of the game I occasionally found myself saying "Man, you didn't need to call that." Certain calls felt out-of-place - too restrictive. Not a peep out of either coach. Players were commenting about how much fun they were having - that made me feel good. There was no pleading for additional foul calls and we probably called 30-40 fouls.
When it was done I felt good - had a smile on my face. It was a great experience. Got another one coming up with him next week - should be interesting ... again.
Every game is a different experience.