My reactions at the time to Jedi were:

I didn’t mind Jabba’s palace in general – I didn’t really notice how bad some of the puppets were until I re-watched it later.

I didn’t mind the second Death Star. Not just because of the trap element, but again, I was ten, so I would tolerate a lot of recycled material (and phoned-in performances…).

The Leia-as-sister bit seemed more WTF than Vader-as-father, except without the equivalent emotional/character development payoff.

The Ewoks felt somewhere between stupid and pandering (and I was ten, so I wasn’t picky).

But mostly I was sad that Star Wars was over after only three movies. It didn’t really occur to me at the time how badly things could go if they kept making more of them. I was certain George Lucas could have still made more great Star Wars movies after Jedi, so they way it ended the saga so decisively was probably the biggest blow. Again, not-cynical-enough ten year old.