I think Disneyland food is a lot of preference, you're always going to get very mixed reactions on items. It is also a quality issue, I mean if you usually eat fast food/ generic items, most stuff will probably be alright for you, if you tend to prefer eating at higher end restaurants, you will most certainly have a problem with a lot of Disneyland's offerings. I go probably once a week and will admit I do get sick of food there.
I don't like the hamburgers for the most part. If you can get a fresh, hot hamburger from Taste Pilot's Grill they can be fairly good, but Village Haus usually serves them just slightly warm. And Tomorrowland Terrace is horrendous, whenever I buy them there they seem to be completely cold. Everytime.
I couldn't do the mint julep either. I felt like I was swallowing liquid gum. I took maybe two sips, and then asked the waiter (we were at Cafe Orleans) if I could have a Coke instead. He was nice enough not to charge me for the mint julep.
The popcorn: I love the way it smells, hate the way it tastes. It just seems really dry to me, which may be a reflection of how unhealthy I like my popcorn. I do like the caramel corn however.
I love the soft Mickey shaped pretzels but last time I got one it was really dry and cold. My suggestion: get one from Coke Corner on main street and skip the carts.
I think the suggestion on trying new places is a good one, I like to try new items, my best friend- not so much. However, he's okay with cold hamburgers and I'm not. So, every once in a while I insist on trying new places. One good result of this was finding out the chicken kid's meal at French Market was something we both liked, and was really a lot of food for the price.