I went into this movie with very low expectation, expecting it to be like a bad marvel movie, filled with bad timed jokes and unable to be serious. I left the theater shocked at how amazing the movie came out. It was well paced, the CGI was flawless, and the story and character were fun and like something that would occur at an actual D&D table. The humor was also great, the Paladin/DMPC got be chuckling all the time.
I must also mention that this movie will likely appeal to you regardless of age or experience with D&D. I watched it with family and friends, which are made up of a variety of ages and experience with D&D and they all loved it.