It is normal. I get quite obsessive those last few days before I get the "I forgot to pack" something trepidation. I verify everything that's packed, and that evrything IS packed. I put the bag containing our documents, passports, etc. near the door and it's the first thing to get loaded into the car. As much as I love those boat rides, I hate those last few days.
Just make sure to time your last panic, and deal with it, before your last sleep before hitting the road. Don't let the last panic interfere with that needed sleep. Enjoy the dream.
I may dwell on the land, but I live at sea!
Sensation 2/03 I disembarked, but never really left the ship.
Enchantment 9/03 Just had to go back.
Inspiration 3/04 Just have to go back again, and again, and again...
Sensation 04/05 The vessel made me do it!