My first flight after I got my PPL(A) was from Welshpool over Snowdonia to Caernarfon. It's the ONLY time I've managed it, due to the fact that it's hard to get a day when I'm free, the aircraft's free, and Snowdonia doesn't have any cloud. So I still remember it because it was absolutely wonderful. I had to come back round the coast as the cloud closed in, but it's the views over the mountains that I remember.
Can't remember my first flight with a passenger; seem to remember it wasn't that big a deal.