You would get Captains Club points for the category cabin you currently have, but would get access to thermal suites, get a bottle of bubbly on request, access to Blu as your dining room and water replenished as well as pillow menu, thicker robes and slippers, a nice X tote bag, a seapass card holder and an expanded room service menu (unfortunately you'd still have to pay the $9.95+ fee for delivery of anything but continental breakfast).