I've been to WDW at least a dozen times, know what to expect, stay on-site, love magic bands, etc. I will be in LA for work and have the opportunity to stay and extra day and visit Disneyland by myself, no one else with me (last week of November) What do I need to know for a 1st time, 1 day trip? Do I get the hopper? Do I say on-site? Is there an off-site I can walk to the park from?