The tourism sector is bracing for the long-awaited return of international cruise ships.

The maritime border re-opens on Monday, with the Pacific Explorer set to be the first to arrive at Auckland's Queens Wharf from Brisbane on August 12.

The official cruise season begins in October, with a full roster of arrivals locked in until mid-July next year.

Cruise Association chief executive Kevin O'Sullivan says many operators involved in international tourism are gone, or have downsized.

He says operators still around are busy ramping up to take advantage of the return of international tourism and cruises, but it will take time to rebuild.

LISTEN ABOVE