As note, despite the Wiki statements, we earned points on seaplane transfer (and I also believe service charges, but am less sure about that).
Earning Points at the Resort - What Doesn't Qualify
Please note that any charges on third party services will be ineligible for points, e.g:
• Seaplane Transfer*
• Water Sports
• Dive Centre
• Spherique Boutique, Island Breeze or any other shops*
• Service Charge
• T-GST (Tourism Goods & Service Tax) and Green Tax (both government levied)