OK. Here is the correct review of this film, omitting the extremes on both sides (hopefully), and from a typical Mayberry lover.
Yes, the storyline is cheesy while the script and much of the acting is pretty lame. That's nearly expected when the producers likely wanted to make a cheap film using non-actors. So let's give that criticism a break. What should we expect? After all, who among us wouldn't want to be in a movie about Mayberry? As for the pros, the Brett and Ashley "prof acting" characters still made for a decent and likable downhome couple. That said about the acting, I still enjoyed the film.
I will give Mayberry Man a thumbs up of 7 for the following two reasons: Barney and Floyd. These guys were perfect. How people could not see that, I don't know. Just like the show itself, when Barney and Floyd were on camera, regardless of who else was on screen with them, they stole the spotlight. Now, I am a pretty tough critic, but as the movie progresses, I found these two amiable "tribute actors' got so good they made a not so good script and imperfect film worth watching. When these two were in the squad car alone, improvising as they went, they WERE Barney and Floyd for me. And, when that happens and you can suspend belief a bit, these two amazing recreations made this trip to Mayberry all worthwhile.
Hang with It all to the end and see what I mean.