Hey I can respond to my own post. Been here nearly three weeks - Only surfed around Waikiki.
Pros
Warm water
Turtles
Near naked girls - (Sorry - kill me now)
Array of varied aircraft going overhead
Nice long dusk time on water.
Less crowded if you can move a few k.s away from the main beach.
Cons
20 mins between sets
Strong cross wind all day
Crowded - Hot locals jump on every wave - also surf schools take prime spots
Inconsistent breaks due to depths over reef (no sand)
Slow fat waves that need a long board
Long paddles out - as breaks can be 500m+ offshore
Mouthy locals
Outriggers and big catamarans cruising/surfing in and out.
Also consider
Rental boards can be big and crappy with heavy paddles and the daily/weekly rate adds up
You may need to rent secure board storage. see
nalustorage.com/rent-a-rack/ if you bring your own board (recommended) consider how you will transport it around the place. You cant just drive up and park at Waikiki.
This is a very urban environment with homeless people and thieving issues.
BTW There are some good SUP shops on Ward avenue and 2nd hand boards 4S on Craiglist.
Aloha