First WDW visit in 4 months so...I don't have a WDW's "routine".
But, I have some DLP idiosyncrasies !
1) Always enter by the most "centered" ticket booth and I only enter the MK by the middle arch. (and I always begin my trip by the MK. Always.)
2) Then, I wander through Main Street and listen to the "hidden sound".
3) The first land must always be Frontierland and the first fast-pass is Big Thunder Railroad and the first attraction is always the Phantom Manor.
4) I buy a magnet with the year et every trip for my mother (she loves magnets

).
5) I always buy a Christmas ornament and a pin.
6) When I leave, I say goodbye to the park and "thank you" to the partner statue.
I think I'll keep some of my routine during my first visit, like the ornament, the pin, the magnet (I'm forced, in fact

) but....I think I'll buy a charm and pick a pearl at every stay too !