I can only speak for myself. I didn't become a true Indy fan until in my middle teens, when I played the "Fate of Atlantis" computer game. Then suddenly I remembered the movies, seeing Temple on TV almost every year around Christmas time for some reason. The warehouse ending of Raiders stood firmly in my mind's eye, but I didn't recall ever seeing the entire movie. The first Indy movie I consciously watched from start to finish was Crusade, and I loved it as a kid, it was my favorite of the three. Then as I grew up and saw all the movies over and over, Raiders became my favorite. It was more mature, more serious, more menacing, and it fitted better my personal mindset, having grown out of the giddy schoolboy.
When Skull arrived, I went to see it twice in theaters. I watched it without an eye on the "making of" of the movie, without analysing it, without comparing it. I was just around for the ride. I have this thing, call it an ability or call it a flaw, where I'm totally sucked into a work of fiction, be it movie, or book, or video game, and forget the distinction between it and the real world. For that limited amount of time, that story IS the real world for me, and I simpy go along with it.
When Indy V comes out, I'm sure the same will happen, and I will enjoy every minute of the experience. Then later on, perhaps during the second viewing, perhaps only with the third, I might start to pull the movie apart, became aware of what's good and what's bad. But first and foremost, I will tag along with one of my favorite movie characters ever as if I was really there beside him.