People did that 'cut to the real world' thing with LEGO, and it ended up being pretty badly mocked. At least in part because it derailed the momentum of the third act.

Never watched that movie is it worth watching?
If you're referring to Warcraft, you can safely skip it (like any video game movie, fantasy movie or movie made to cash in on pop culture buzz).

If you're referring to The Princess Bride, you should probably watch it at least once so you understand where a third of the quotes on the internet come from.