Worst experience: La Hacienda. To be fair, it was shortly after they had opened, but it was almost an hour past our ADR time before we were seated. After about 20 minutes we were ready to jump ship, but we had hit that point where we never would have gotten a seat anywhere (and we had two toddlers with us), so our best bet was to continue to wait. Once we were finally seated, there was no apology and overall service was rushed and rather cold/rude, not at all magical. And after all that, we didn't think the food was all that great either!
And I also want to note something that wasn't a bad experience, per se, but an awkward/sad/humbling one: We had a super sweet server once (I don't want to say the restaurant, as I don't want to "out" her), and we engaged in a lot of conversation throughout the course of our meal. Even though she never outright complained, through our talks we discovered she was a struggling single parent, having issues with a babysitter, working multiple jobs, etc. We left her an awesome tip, but I felt incredibly guilty the whole time we were there, spending time with our family, spending lots of money. Don't get me wrong - I'm a working mom as well, and spend many hours away from my kids... and our hard-earned vacations are our much-needed time off together. But that "dose of reality" in the middle of our magical trip definitely brought me back down to earth that night.