Yeah, I'm thinking I want to start looking at the ports- and also researching where to fly in to Ca, transportation to the parks and a resort (?) stay for a night or two. We are only interested in doing something before the cruise- not after. We'd love to go to WDW after the cruise but we're already going to have to RUSH home because the kids are going to miss some school to do this cruise. Plus we'd rather not go thru the hustle and bustle of WDW after the cruise, we'd prefer to do it before.
FWIW Sailing is from the Port of Los Angeles in San Pedro.
San Pedro is between Rancho Palos Verdes and Long Beach and below Torrance/Carson...pretty much the armpit of Southern California

(With all due respect to anyone here who
lives in San Pedro

)
There are plenty of airport choices for flying into the LA basin. 5 to be exact:
LGB - Long Beach - Closest to the port, smallest of them all and so easy peasy to get around, also probably more costly to fly into, JetBlue flies there
(19.6 miles to
Disneyland, 14.1 miles to San Pedro)
LAX - Los Angeles International - next closest based on road miles, no explination needed, you can fly anyone including Air Yak there
(33.2 miles to Disneyland, 24 miles to San Pedro)
SNA - Orange County/John Wayne/Santa Ana - sometimes a good alternative to LAX, less congested and easy to get to the car rentals, directly adjacent to the 405, closest airport to

Disneyland
(15.6 miles to Disneyland, 34.8 miles to San Pedro)
BUR - Bubank - farther north than LAX but has the benefit of putting you near Univeral Studios
(42.9 miles to Disneyland, 41.0 miles to San Pedro)
ONT - Ontario - sometimes cheaper than LAX/SNA but unless you have family in the area to go visit, the $50-$75 bucks you save may not be worth the hassles of dealing with SoCal freeways
(33.1 miles to Disneyland, 60.4 miles to San Pedro)