Party days are great, but you need to plan a bit. Party goers who come in at 4pm don’t care if they are waiting in a long ride line and tend to eat dinner in the parks. I highly recommend trying to get some LLs for after 4 pm and/or planning things like COP, Laugh Floor, Philharmonic then. Even lines for IASW and Under the Sea will go up those last couple of hours. But if you do early entry and just GO during the day, you can probably get everything in, except obviously fireworks. Sometimes I snag a dinner ADR in MK, but realize the shops will be closed to you when leaving if you do that. Sometimes I have planned a TS meal at DS or another resort at around 7 pm to cap the end of a shorter park day. I admit I have also just crashed in my room early, too, ready to hit EE again the next morning. Non party days are crowded all fall unless it’s storming. Kind of a bummer, actually for infrequent visitors.