Just an FYI that you'll need AK park passes for the sunrise safari. Worst case, you could book the concierge room, check with the IPO staff for safari availability and based on that, either keep the room, or downgrade to a standard floor. If your plans are to arrive early or by mid-afternoon for check in and then basically just enjoy the resort, I think concierge level is a good choice. They have a nice relaxing lounge.
Good luck with it,
Tammi