I know there are quite a few applicants who have gone to Art Center at Night, PCC, Saturday High, and the Concept Design Academy before applying, so they are more than likely dominating the ranks. Moving to LA for a year prior to applying is definitely a good idea. You will probably save money by the amount of scholarship you will get with a more geared portfolio. If any of you submitted an illustration portfolio (life drawings, paintings, sketches, etc) to the ent design program, you probably got rejected because ACCD looks for specialized portfolios for each major. (as is said earlier in the thread,) for entertainment the expectation is somewhere close to 40 pages of ideation process for a single story, spanning figures, props, vehicles, and environments.
Knowing the campus, the city, and taking cheaper classes to get your skills way up (provided you have the right amount of push) can really catapult you ahead. Pretty much every person in my term who went to ACAN or any of the other programs knows what to expect from ACCD in first term, so they go in pretty well first term. For most ID students, first term will kick your ass. I know you hear that alot, but if you don't have a good work ethic (like myself), you will end up doing around 2-3 nights per week where you won't get any sleep. You'll just work through til you have class at 8 AM.