My wife and I have an overnight layover scheduled here on our way to Hawaii for our upcoming anniversary (flying AA). I'm a new, first-time Diamond member this year and I'm actually pretty excited about being able to check this property out (considering I'll be staying at the Andaz Maui and Grand Hyatt Kauai for the following 9 days!). I do have a couple questions I was hoping could be answered:

1. Because this is an overnight layover (>12 hrs), I believe we'll have to retrieve our checked bag from security and then re-check it in the AM before our departing flight. Will the logistics of both the retrieval in the PM and re-checking in the AM be at all difficult given the setup of the hotel and security?

2. I have an AMEX Platinum card, and it looks like the Centurion Lounge is quite close (how close?). There are obviously glowing reviews of this hotel's restaurant and Diamond breakfast, but if I have access to both, which would be my best option in the AM?

3. Finally, our departure the following morning is at ~11 AM, so I took the liberty of scheduling my Global Entry interview for 8 AM. Can anyone provide some insight as to the proximity of the GE office (D21/22 - Arrival Level) to the GH (D22 - Departure Level), and what process I'll have to go through to get there in the AM, and then back?

Thanks in advance!