Freeport suffered the greatest destruction anywhere in the Bahamas from Hurricane Matthew's pass last month.
Royal Caribbean said the Adventure will still exit drydock on November 14, but without many of the improvements that had been planned. Some will be added on the first few sailings after drydock.
In a letter to travel partners, Royal Caribbean said work will continue on the Dual Racer water slides, FlowRider and Splashaway Bay aqua park with a new opening date of Dec. 10.
Royal Caribbean said its premium steakhouse, Chops Grille, won't open on the Adventure until early next year. In the meantime, Giovanni's Table will offer select items on the Chops menu.
Plans to add Izumi, a Japanese restaurant, have been shelved.
Also, the introduction of new suites and staterooms "is no longer possible at this time," the letter said. Royal Caribbean and travel partners will be contacting guests who had booked those rooms to discuss re-accommodation.
Improvements that will open for the initial sailing after the drydock include Boleros Latin lounge and the two-story mini-golf course.
In addition to storm damage at the shipyard, Royal Caribbean cited the global rerouting of cargo ships carrying equipment and materials as a factor in the modified renovation plan.
Launched in 2001, the Adventure of the Seas is a Voyager-class ship. In 2014, it received "Royal Advantage" upgrades, including an outdoor movie screen, digital signage, ship-wide WiFi, new Concierge and Diamond lounges, and the changeover of the Portofino restaurant to Giovanni's Table.