Here's an idea. Drive to Vegas. The Strip alone is a one day adventure. get a room at one of the hotels there. Stay the night. In the morning drive to Hoover Dam. yet another day trip. another alternative is to take a whole day, get on a single engine tour plane, fly into the Grand Canyon airport nearby, it includes a bus trip to the south rim, lunch is included and fly back to vegas. They pick you up at your hotel and return you. I've done all of these as I was a huge gambler (not addicted) back in the day. The flight trip to the Canyon cost me about $150. Should be around $200 by now. well worth it.
Another option, drive from vegas to VALLEY OF FIRE STATE PARK or RED ROCK. Now all of this is desert events and I know you wanted ocean sights. Ok then. From LA, drive down to San Diego and come up along the coastal highway until you get sick of water.
California is big and if you could catch a cheap flight (this ain't Easyjet or Germanwings pricing), take it to SF or Montery (my favorite) and drive to Carmel along 17 mile near Pebble Beach golf course. Amazing views!!!
In LA, skip DISNEYLAND (as a Orlando Floridian, what a rip!). Go to UNIVERSAL, KNOTTS BERRY FARM and the San Diego Zoo. Go to Santa Monica Pier and blah, blah, blah. You get the idea.
Just a few ideas.
I'm coming in on the 24th and staying south of you but will have a vehicle. Maybe we can meet up and do the tourist (yuck) thing.
Stay in touch.