Well my Disney experience has spaned 5 decades and the experience goes up and down.
In the mid 70's I went to MK with parents during spring break a couple of times. It was crowded as in an hour minimum wait time for anything even the tree house had a wait time. I remember SM being 2 hours and the jungle cruise being 2 hours or so. The staff was different back then they were mostly locals with most being Southern. Lot of Yes, sirs and ma'am's. Not some guy from who knows where using literal English.Staff in general was friendlier. The service had a different feel and I would say a better one. The place was cleaner, they had people out with dust pans and brooms everywhere to pick up cigarette butts and trash in general. I never saw an over flowed garbage can or anything in the landscape it was cleaner then today for sure. Also no buggies, no giant back packs and in general no people who were near death. The crwod wasn't any friendlier then they are now, I remember some Hispanics being rude same as today.
In the early 80's I was there again on spring break but Epcot was new. I enjoyed Epcot and that was huge, lots of walking. MK was the same except it was buy one ticket for all day by then. Can't say the fashion sense around that time period was good. No changes really at MK maybe slightly less crowded because Epcot was open.
Didn't go to WDW until the late 90's. Took a girl friend down there because I wanted to hit Disney again and Universal had opened so I wanted to check that out. Stayed at the Hyatt and we did a 2 days at WDW, a day at Universal and a day at Busch Gardens. That was during January and MK was fairly empty, I did everything I want by dinner and off for drinks after that. Epcot was the same way. Not crowded, service levels about the same. Price wise it was no big deal for two adults with decent jobs. I can't tell you the prices because it wasn't even something I thought about.
Then the 2000's with kids. Price started to be a factor so I bought 10 day non expiring tickets which brought the price down to something like $30 a day for each person. 10 tickets, 4 trips over maybe 2 years. 3 days at WDW is enough for me. 2 is fine as well. I started going again in probably 2008 and wait times were low in October and in January, that's when I went to WDW because I'll never repeat being at WDW during Spring Break. First thing I noticed was many old attraction were gone from MK and Epcot and not replaced with anything. Especially Frontierland. What's there is not what it use to be like at all. Epcot seemed to be focused on being a high priced food court and bar. Mostly useless for kids. The prices in the parks except Epcot were much more reasonable. I remember buying a corn dog and it was like $1.50 which for a park isn't bad. I stayed at the Wilderness Lodge for I think $186 a night which wasn't bad. Rented a stroller because it was much easier then bringing my own, something like $36 for 3 days. Again not bad. Service was different many interns from all over the world were working and sorry but I don't like that. Most have no sense of humor and are clueless about anything in the US. Not their fault, my wife worked for a hotel and they did the same thing with interns and had the same problems with them. It's just Disney seemed to have put way to many interns in front line positions. Cigarette butt sweepers disappeared and the parks got dirtier. That really stood out in my mind. Where did the guys with dust pans go? FP worked well enough and didn't take a bunch of planning.
2010's. The down spiral begins. For about a 5 year stretch I went to WDW 2 or 3 times a year. The prices started to climb for everything across the board. Strollers doubled in price, kids were older so you be walking now. Funny part there is the stroller place use to be a mad house at lower prices, Disney up the price and now I don't see anyone renting their strollers. They over did it. Next was food, price for a corn dog went up to $4.50 from the previous $1.50. Big jump, here kids we're packing in snacks and food into the parks. I'm not dropping $200 a day on crappy park food. With a family of 4 that is easy to do. Hotel prices spiked, WL went up to $326 as the cheapest rate I could find. For that kind of money I expect a high end hotel. It wasn't. Carpets were thread bare, mattresses had huge craters in the middle of them, refrigerator broken, half assed hole fix in the bathroom and I had to fix a toilet on the first night I was there. 11:30 at night I'm not waiting for the night crew to come fix it. Pulled up to the place and no one came out to take my bags, that's not high end that's Motel 6. That was the end of the high end hotels for me.
Park wise nothing changed in those years same old same old with Epcot having less. The crowds got bigger year round and then FP+. FP+ is terrible. I simple don't book vacations 6 months out so I get locked out of rides and the stand by line is so long it means I just don't ride certain rides. Restaurants are the same, the good ones are locked before I can book them. The death blow was the end of non expiring tickets, they're gone and so am I. I'll wait for the next economic crash when Disney actually needs the business to come back. I would like to check out AK with Avatar and the other work they have done but that can wait for now.