Everyone understands each other.

In Star Wars, everyone understands each other. Like Chewie (how well do you have to know Chewbacca before you can start calling him Chewie?) goes, "Whaaaa orrr whaaa ahhha!" and Han Solo says, "Yeah Chewie, I know exactly what you mean."
Or R2 D2 goes "Poop de wheet! Poop de wheet!" and Luke Skywalker says, " I totally agree with you R2, I didn't rate that play at all. The plot was woolly and the characterisation just didn't work for me."
Does everyone in Star Wars naturally speak a thousand languages, including ones that consist of burps and beeps?
And Boba Fett. Boba Fett, right. He's at a party at Jabba's, and he's standing there in his full armour. I mean it's supposed to be a party. At least take your helmet off and have a beer for goodness sake!
And when Jabba catches Princess Leia, did he just happen to have that metal bikini in her size about the place? Because if not, where did he get it? He lives in the middle of a big desert. It's going to be pretty difficult to order up a metal bikini in that situation.
I hate to pick holes in the Star Wars storyline, but you do have to think about these things.