We signed up for the highest level of concierge service because of the perks.....larger stateroom, priority check-in, priority boarding, free ironing of clothes, service of the concierge, etc. So I'll deal with each of these:
1. Larger stateroom. We were on level 11, with almost all suites, so I don't know if it was just our room, or all concierge level rooms (Looks like all.) It was the SMALLEST room we have been in EVER. That includes Celebrity and Royal Caribbean. Some drawers only opened 4", and none were larger than 12"x12". Usually I put capris and shorts in drawers, but since there was no room, I had to use the closet...which was the SMALLEST closet we've ever had. There was so little storage room that I had "stuff" everywhere - very messy looking. Also, if you sat in the chair at the desk, you could not walk between the coffee table and the chair to get to the balcony. If you want more room, you will need to be in suite level.
2. Priority check-in. We were picked up in a private care from the Intercontinental Hotel and dropped off in Papeete at 11:00. There was no priority desk - we waited in line with everyone else.
Tiny closet, tiny drawers, would have preferred a combo tub/shower and more closet room. Very little storage space.Quiet location. Good side of the ship for dock side performances. 11th floor was very nice... close to pool deck and topside dining.