They're incredibly repetitive about literally everything. Every time they face the Orioles, Buck will mention how this is the first time they've had three players hit 30 or more home runs in a season, and Tabler will immediately follow that up with "that's so surprising with all the great sluggers they've had over the years." Seriously, every single time.
As for what they have to talk about, I assume they pretty much have free reign, except when they uncomfortably reference WAR here and there, where I assume someone stuck a sheet with that in front of them and told them to read from it.
And on an unrelated Buck complaint, he needs to stop calling people "armchair quarterbacks" when they question the managers' decisions. It's just pissing me off at this point.