Well, since you asked . . .
You may want to grab some
and a cup o'
cause this won't be short.
What we're talking about here is the ultimate
Disneyland entertainment trifecta. It's not for the weak at heart, and definately takes some strategic planning, agility in maneuvering through crowds and most importantly the will to make it happen!
To start with, you want to catch the DEP in DCA down by the pier area. You can stake out a spot very easily down there 20 minutes prior to show time. You want to be on the same side as the Mulholland Madness and Golden Dreams Theater. I like to sit somewhere inbetween the two. Once I see the last float coming toward me (Salute to America), I stand up and walk with purpose (long legs and aforementioned agility help here) toward Golden Dreams, hang a left past the restrooms and then turn right to take the GRR back trail towards Condor Flats area. If you have moved swiftly enough, you will beat the front of the DEP to Sunshine Plaza and be able to head out of the park while the rest of the crowds are still watching the parade.
Work your way across the esplanade and find the shortest line into DL with the swiftest looking CM ticket scanner. Once inside you will have a decision to make. How are the crowds? Is Main Street completely jam packed? You probably have about 5 minutes (if that) to find yourself a spot to sit for fireworks.
OPTION 1: If Main Street is ultra crowded, you can choose to watch RDTC from the Train Station. I like to just stand up on the first platform. If you choose to watch the fireworks from this location, you need to understand that you will miss out on some of the special effects that can be seen from the Hub area, but to me, it's a fair exchange for accomplishing the great trifecta! Once RDTC is over, you can jump on the train to NoS (1st stop). You should be able to pretty easily find a good spot for the second show.
OPTION 2: If you find that you have a few more than 5 minutes prior to RDTC and Main Street looks manageable, you can try to make your way toward the Hub, with the goal of getting yourself somewhere close to the left side of the Hub (facing the castle) near the Frontierland entrance or near Carnation Plaza entrance (as mentioned in previous posts). Crowd control will have you moving around the hub in a counter-clockwise motion, so if crowds are bad, you may be watching the fireworks while you are walking -- not fun. However, you may at this point choose to just plant yourselves somewhere on Main Street to watch the rest of the show. You will have at least 40 minutes to get yourselves to NoS to watch F! after, so this can be done.
Many people think this plan is risky and unadviseable, especially for those who have not experienced these shows before, and I agree. If you have the option to do these shows on different nights, then by all means, you should. I prefer to think of "the ultimate entertainment trifecta" as a challenge and fun to do if you have seen all three shows before.
Have fun and please post (and gloat) if you are able to accomplish the trifecta!
DM you totally crack me up sometimes with how you explain things. You certainly haven't let me down yet with your suggestions. 
