Pajero's are great on the beach JN, the SS2 4WD system is bloody terrific IMHO.
I had the NT DiD on the beach once for a few days, previously an NM and an NL many times (both petrols though). Much preferred the NT on the beach with both TC and SC off.
Just had my LC200 on the beach for a week at Fraser last week on both the Eastern and Western side beaches. Miles better with both TC and SC off too, I reckon. The annoying chatter of the ABS trying to straighten the truck up, when SC was not off too, gave me the screaming sh!ts. Just gotta remember to turn it off each time.
For good washing, grab a $20 gutter cleaning hose fitting from Bunnings. Head swivels ~120 deg on way and ~70 or so the other. Telescopic, trigger operation and fits into the typical chassis holes. Works great and keeps you a lot drier.
Cheers
Brendon