I totally want to chime in, because I've gotten a couple of trips in, the latest being the Adventures by Disney tour of Hollywood and
Disneyland.
Airports: I love the John Wayne airport. It's smaller than LAX, and I found that getting to DLR from there via SuperShuttle was a breeze. Long Beach airport was smaller than John Wayne, but I felt it was if the cast of "Wings" were going to pop up out of nowhere.

It was a culture shock to arrive there from my home base airport: O'Hare International.
Hollywood: I really liked the Renaissance Hotel, and I agree that all the crazy people hang out on Hollywood Blvd. People in low-class ghetto versions of character costumes wander about, looking for tourists who'll pay them to pose for pictures. And those are just the costume crazies. I saw my share of crazy people who you don't make eye contact with and walk past very, very quickly.
But then again, I did enjoy the Hollywood and Highland Center. I found decent sushi at the place that also served shabu shabu, can't recall the name. And I got to act a bit spontaneous and see Kathy Griffin perform at the Kodak Theater. I kept thinking how cool it was that I was in the theater where they hold the Oscars.
Oh, and when I saw the Chinese Theater, I realized that Disney definitely must have built the one at WDW from the blueprints. It was so nearly identical that I felt it was anti-climatic. I did enjoy seeing the hand and footprints of the golden age of Hollywood stars, though.
El Capitan: I didn't get to see a movie there, but I have to tell you that everyone should see a movie there. If I had extra time I would have. It costs a bit more than a normal movie, but there's a pre-show that I think everyone should see. It's awesome. (I saw it as part of the ABD tour.)
Hotels: I really liked both the Disneyland Hotel and Grand Californian, but I think the Grand Californian is the one I like more. Of the good neighbor hotels, I've only stayed at Candy Cane Inn. I wasn't impressed by their pool area, but the room and its amenities reminded me of a moderate resort at WDW. The free continental breakfast was good, too.
I've been there in August of 2003 when it was about 100 degrees. I felt it was easier to deal with than August at WDW. Lack of humidity by comparison makes a huge difference. It was hot on Disneyland's 50th birthday week, too, but again, it wasn't terrible compared to WDW.