It depends on the cruise. On the normal 7-day Societies itinerary, I believe it goes like this: the first day, the ship is anchored close to Vaitape, the town. The tenders to shore go every 30 minutes, and the tenders to the motu go every 60 minutes. On the second day, the ship moves over closer to the motu, and the tenders go there every 30 minutes.
I could have the exact numbers wrong, but the comparative frequency is about right.
