I usually book something very soon after leaving a cruise, but will book onboard the Liberty this June since it garners me a $100 credit and my agent still gets the booking.
That last breakfast is a transition point for me too. I hate how they have everyone test hydro the lounges with forlorn looks on their faces. One of the least annoying debarkations you can have is on the Holiday in Mobile. It was very matter-of-fact on the the ship and then when you get in the terminal the staff treats you like long-lost friends who have dropped by for a visit - it is so refreshing to be treated like a person, even the Customs officers smile in Mobile!