It’ll be years before the home ports and itineraries are revealed. But it’s reasonable to expect that they will be used to fill out that schedule - that is, increasing service to Los Angeles and Galveston (both previously mentioned by
DCL), going to two year round ships from Fort Lauderdale and adding a second ship in Europe. NYC, expanded seasonal San Juan, etc. are likely candidates as well.
I highly doubt DCL will go to Tampa. Budget itineraries (Tampa typically houses Royal’s cheapest itineraries) would sway dollars from PC. Consider that multiple bloggers reported that DCL wasn’t happy with the performance in New Orleans. Ultimately they’re going to expect a hefty premium so that rules out secondary ports and regular exotic itineraries.