Celebrity Cruises’ Celebrity Millennium set sail Saturday from the Port of Miami, fresh from becoming the fourth and final Millennium Class ship to complete the line’s $140-million “Solsticizing” process, incorporating a host of the venues and experiences guests love most on the Solstice Class ships.

The initiative was completed within less than two years, with each ship completing the massive transformation over the course of a three-week drydock period.

“Solsticizing has been such an exciting initiative for us – and more importantly, for our guests, as indicated by their response to each of our Solsticized ships,” said Celebrity’s president and CEO Dan Hanrahan.

“Our Millennium Class ships already had a large and loyal following, having repeatedly ranked at the top of many of the world’s most prestigious consumer polls, and their original style, design and ambience served as significant inspiration for the design of the Solstice Class. So now, we’re bringing it full circle, incorporating on the entire Millennium Class what our guests enjoy most on the Solstice Class. It ties our whole fleet together in a very powerful way.”

One of the many Solstice Class features added to the Millennium Class ships is Celebrity’s AquaClass category of staterooms, with spacious, private verandas; exclusive access to the specialty restaurant, Blu; complimentary access to the Persian Garden and Relaxation Room in the AquaSpa; a personal Spa Concierge to book exotic AquaSpa treatments; use of Frette bathrobes and slippers; enhanced personal care products, and plentiful in-room amenities, including Hansgrohe shower heads, fog-free bathroom mirrors, aromatherapy selections, and daily deliveries of complimentary bottled water and teas.

Another Celebrity exclusive – “Qsine,” the novel restaurant introduced on Celebrity Eclipse in 2010 and Celebrity Silhouette this year – is also now on Celebrity Infinity, Celebrity Summit and Celebrity Millennium as a result of each ship’s revitalization.

The first restaurant at sea to present a menu and wine list on an iPad, Qsine serves a blend of classic and contemporary dishes in custom-made serveware, such as spring rolls served in vertical springs, and popcorn shrimp in theater-style popcorn boxes.

Joining AquaClass, Blu and Qsine in the “Solsticizing” initiative are:

•  the hip Celebrity iLounge, which debuted on Celebrity Eclipse and made Celebrity Cruises the industry’s first Authorized Apple Reseller (to be added to Celebrity Constellation in 2013).

•  Celebrity’s “eXhale” bedding program, in partnership with Reverie, a leader in the field of luxury bedding. Hand-made in the U.S. with natural raw materials such as bamboo and sustainable natural rubber, the mattresses are almost entirely recyclable and biodegradable, feature removable, hypo-allergenic, antibacterial and dust mite-resistant covers, and a breathable, plush pillow top with a patented air flow design. Rounding out Celebrity’s eXhale bedding program are custom-embroidered, 100% Egyptian cotton linens (to be added to Celebrity Constellation in 2013).

•  A new twist within Celebrity’s casually elegant bar, Michael’s Club, where its selection of fine whiskies, cognac, bourbons and scotches is now complemented with craft beers, including 50 international selections (the new Michael’s Club concept will be added to Celebrity Constellation in 2013)

•  the ice-topped Martini Bar and Crush

•  Celebrity’s vibrant creperie, Bistro on Five

•  the inviting Café al Bacio and Gelateria

•  Cellarmasters wine bar, complete with the “Enomatic” state-of-the-art wine serving system – an industry-first when it debuted on Celebrity Solstice – allowing guests to select wines by the glass, at the touch of a button

•  entirely new verandas added to the ship’s spacious, luxurious Celebrity Suites

•  additional new oceanview and inside staterooms

•  an expanded collection of original, contemporary art