Head Discharge in the Caribbean

[celticroamer]

As a potential Caribbean cruiser, I wonder what cruisers do regarding discharging holding tanks when at anchor in an idyllic Caribbean anchorage for say 3 weeks. Assuming there is no pump out facility nearby, does one up anchor every week or so and head offshore to macerate and discharge? Assumptions: boat has a holding tank, a macerator and one wants to be eco-friendly.

Experiences of other cruisers welcome