Preconceptions about D&D? Definitely. I mean, I fully expected it to suck. Also, I'd be interested to know what actual tabletop gamers think about it. Maybe they've got a bug up their collective ass over it? You know how some fandoms react when their "precious" is appropriated for mainstream use, and it's all, "We were here first!" and the like. Although it kind of feels like D&D has been "cool" for a minute or two already, so... I don't know.
Mario movie is loaded with "tried-and-true" pop songs. It's nauseating.
The weird thing is that's directed by the Teen Titans Go! guys... but it's just the most paint-by-numbers, inoffensive fluff imaginable. I really wonder if Nintendo put the brakes on anything that could have been considered too "out there". Purely speculation on my part, but the film plays it so straight and safe, it's baffling considering the dudes at the helm.