Wheel chair service to/from airplanes is not difficult in Bali. You might have to wait awhile. They have a mobile vehicle that uses the catering door, that can take you up and down (like an elevator for 6-8 wheelchairs). I always reverify that a wheelchair will be waiting.
You did get lucky by not transiting HKG. Glad the cruise worked out fairly well. We like cruising, but 7 days is the longest so far. However, I don’t think we will be cruising for quite some time given the current circumstances.