We were just in that very stateroom last May
First of all, there's a separate concierge check-in line at the terminal, down at the far end. If you're not sure where, just ask one of the cast members. Then you get to sit on those couches at the end of the terminal rather than wait in the very long boarding line. You get priority boarding, but they do allow guests with disabilities to board first. There will be a special place setup for you to meet with the concierge staff early on the first day. They will book meals at Palo, wine tastings, galley and bridge tours, excursions, spa appointments, Flounders - basically anything that requires a reservation. For all of the meals, tasting, and tours, they're great. We were just touring the islands on our own, so I can't comment about excursions. Those I think you should book at the 90-day mark if you can. As for the spa, I recommend your going there first and booking things there. The poor spa girls that were helping with concierge spent all of their time on the phone trying to get through to the spa to confirm things. I think that's a lot easier to do on your own.
Throughout the week, you get some kind of goodies every day - chocolates, fruit, cheese and crackers, etc. You can order off the full restaurant menus for any meal (although it's whatever is being served in the restaurants that day of course). There's a huge list of movies and cds you can watch, even games you can play. Just call and they'll be delivered.
The room is the best part, and you're even in one of the large cat 3's. I knew it would be big, but I thought it was tremendous.
They even took care of us when my uncle wasn't allowed to join us for tea at Palo. He was wearing jeans (although they were navy blue and very new - looked better than the slacks he had), and the maitre'd told him he had to leave. Later, I looked at the current navigator (I think the dress code has changed since) and for tea, all it said was no shorts. Nothing about no jeans. We had everyone apologizing to us all the way up to the Dining Manager of the entire ship.