I am well aware of the dozens of non-park restaurants... but not thinking of myself solely there are many people who really want to experience BOG dinner in the evening and taking in the fireworks. Personally when I go to MK I love to spend the entire day and evening there. We do not rush and hopping for us is more hassle then it is worth. We love closing down the park.
There is absolutely no denying that people who do not like parties or do not want to spend the money for parties are really put at an imposition at certain times of the year having to work around them. People here on the disboards (crowd calendars) are true planners and I like to plan park days for certain as well. I can testify it is no problem when I am paying for a party because I know I will have a MK day that is decent if I spend the entire day there on the party day. The only time I can count on being busy is that period between 4:00 and 7:00. The years I am a non-party guest are a real pain!
I do not know why most party proponents are not at least wiling to admit that it is a real pain for people not going to the parties instead of letting us "know" the alternatives. I can certainly see the desire to have the party. It is novel..get to see rare characters, get to have a less crowded park, special parade.. etc., etc. MK is the most popular park. If you have already spent a lot of money on a vacation the idea of spending more money on party tickets is not doable to some people and then they are stuck going to MK on days that are highly unrecommended or go on a party day and miss out on a lot.
I do not know what the answer is to make both sides happy...I know not letting party people in quite as early as 4pm would go a long way for me. I do not think 3 hours of transitioning is necessary. Also if that amount of time for the money is too much for party ticket cost perhaps Disney should adjust the price of the party ticket accordingly so it is a better experience for all.
There is no reason for Disney to try to make both sides happy, they are a business, they will operate it to maximize profits. They will adjust the party night operations and schedule in a way that works best for them both from an operational, financial and safety point of view. They have increased the number of parties because they are selling them out or close to, making lots of money and it fills the resorts during what used to be a very quiet time (ie August parties). And to keep selling them out at the current party prices they have to make it a highly attractive event.
Day guests ........... well they aren't as worried about them. Most have already committed to trips and tickets, and what these parties do is make a Hopper ticket highly desirable and those are pure profit for Disney.
Imagine if only 1 person per room per week (7 day ticket) bought a hopper pass. That is $2.25 million per week profit ($117 million a year profit). Would guess most have more than 4 day tickets so that the 5th, 6th etc days are only $20 so hard to complain you don't get your days worth.
I see no point in anyone complaining at all. Not happy either way, vote with your dollars.
I don't see it as a pain for day guests. You are in a probably less crowded park because many avoid the park party days and then later in the day some will begin arriving early spread out over 3 hours, some are already in the park with you. Many of them coming early are going direct to an ADR and not impacting the attractions at all. Main Street used to be more crowded but last year they sent party guests via the back lane so no issues there. That said -
If you are a day guest and don't like the hours, don't go that day. If you don't like the number of party days, don't travel that time of year. If you travel that time of year take advantage of rope drop and park hopping. If you think Disney is ripping you off all around, vacation elsewhere. If I'm not happy with a vacation destination I move on.
If you are a party guests and Disney decides they won't let you in until 6 or 7, then you have to decide if the party ticket is worth it. If not, don't buy them. If I can't get in until 6 I would likely still be okay with 6 since I am in before the party starts. If I can't get in until 7, then I probably won't buy tickets because that means I likely won't be back to the party area until 8, losing an hour. My decision.
Disney decides what works, we decide if we will participate.