Had some funny parts but it definitely can't recapture the magic of the first... and I don't just mean that people recognize him so it's harder to fool them. Some of the best stuff in the first didn't involve fooling people... like how he an Azamat are super apprehensive about the escalator and he assumes the toilet is for cleaning his face. I guffawed loudly near the end when he threw his bag down and we hear a "bah-gawk!" added in post, reminding us that he carries livestock around in his luggage (calling back to the subway scene).
Love that they were able to pivot and incorporate the pandemic and lockdown in the story. Rudy was definitely tucking his shirt after she removed his mic, which was wired under his shirt. You can even see a big lump of shirt on the left (Rudy's right) getting pushed down. A lot of stuff was clearly added in post where you will see SBC say something with Rudy out of the frame and then they will splice a clip of what is supposed to be a reaction, but it clearly wasn't since you see the exact same reaction repeat in response to something else: Same reaction to the comment about cousins as when they ask him to say something into the mic. Even the sound check question was added in post, since his response was "Yeah, I'm good."
There's a faked shot that presumes to show what Rudy saw in a book but you can see that they cut to a pick-up shot of some other old white person's hands. Good attention to detail since they replicated the mask bunched up in his hand but you can see the number of buttons on his sleeve change (four straight to three sloppily stiched-on buttons) and the round ring on his left hand gets replaced with one that has a flat, rectangular face. Point is, Rudy likely didn't see any of that.
If you can't see BOTH people in the frame AND their mouths, you can't trust any of the audio. ADR aplenty here... and much of it is obvious.
The whole thing is kind of a plot hole though since "Borat" puts on a disguise while on the way there for no reason.
I will say that Rudy doth protest too much. It would've gone much better for him if he had embraced it and explained that it was clearly edited. I guess he was pushing back without even seeing it.
The ending was a big plot hole too, involving the use of technology in a place that they established earlier in the movie would not have the supporting infrastructure. Even their leader is unaware of the tech.