I'm fairly certain there was a concierge lounge. There was a lounge for someone but I wasn't allowed in so I don't really remember what it was for.
It was my first
disney cruise and I've never cruised out of PC. We stayed in the city the night before and walked to the port. There was a Royal Caribbean ship that had just come in and we had to walk through those folks to get to our ship. They were so chaotic - tons of lines, tons of people, it was crazy. Walked over to the terminal where disney was - literally no one there, we had 3 guys helping us with our 2 bags. It was so nice and easy.
We showed up well before our PAT because we had to check out of the hotel. I've read that though Disney says that boarding starts at 1, in PC it's usually earlier. I feel like ours wasn't much earlier but I could be remembering wrong. It did get pretty crowded in the terminal before they started boarding (like standing room only busy). We met both Mickey and Minnie while we waited.
It was our first cruise and the line for us was pretty short. The silver line was significantly longer. When I cruised, the people that led us to the lines handed out the medical forms.
Also incredibly easy leaving. We found our luggage right away and while we got picked up right away so didn't have to wait around at all, I saw none of the confusion like the RC cruise. We're doing the cruise over Thanksgiving out of NYC this year.