The email was sent at 12:38 pm and I saw it at 12:45 pm. I called at 2:38 pm and was on hold for about 20 minutes. While I was on hold I was on HAL's website looking at what SA cabins were still available. There were still the same 10 suites on deck 7, that were available when I checked the night before, so I thought that was a good sign. It does make me wonder about the whole upsell process, especially since it was only a few days until sail date.
The rep was ready to go with room offers as soon as I gave her my booking number. It was a quick and easy process and I think I waited on hold longer than it took to make a decision and pay for it! She only offered me that non adjoining suites at first until I asked her about one of them. She said it was available but most people don't really want them if there are others that are not adjoining so she offers those first. I took one that was not adjoining.
I just checked again and there are still 6 Neptune Suites available on deck 7 and 2 on deck 6. All of the Signature Suites are sold out.