Honeymoons: Recommendations & Budgets?

We're about to start planning our honeymoon for this winter. Reason being it's long after the wedding which is full-on enough! And gives us something to look forward to in the middle of the year.

We're thinking of going for 10-14 days, somewhere nice and warm.

Can anyone whose been on a romantic/luxe holiday or honeymoon share your experience of where you went and how much it cost? Also give an idea of what activities you got up to during the day and what the food was like.

Looking for suggestions of locations we haven't considered! Currently thinking of the classic Aitutaki but potentially some of the lesser visited Islands could be appealing.