Mlife rewards

I am on the Oasis in a few weeks and have a few questions in regards to the Mlife rewards member benefits. I called in to let Royal know of my status. I have never been of status on another cruise so just wanted to know a few questions as I am gold with mlife.

1. What is the entertainment tour?

2. It shows priority Check-in, will that show on the signage when we go through the port terminal? How will I know which line to go in?

3. What is the "Welcome Amenity"?

4. Departure lounge access, will I get a notification about this towards the end of the cruise?

I appreciate your help!

The entertainment tour is a behind the scenes tour of the main theater, given by some of the performers and/or stage technicians. You get to see costumes, sets, sound board, lighting, etc.