Lin has responded to the question on the F-bombs on his twitter (https://***********/Lin_Manuel) ....here's what he said (edited for language)
"LANGUAGE!
1. On July 3, you're getting the whole show, every note & scene, & a 1-minute countdown clock during intermission (bathroom!)
2. But MPAA has a hard rule about language: more than 1 utterance of "****" is an automatic R rating. We have 3 in our show. So....
...I literally gave two ****s so the kids could see it:
1. In Yorktown, there's a mute over "I get the f___ back up again"
2. "Southern *record scratch*kin' Democratic Republicans."
You can sing whatEVER you like at home (even sync up the album)!
Love you. Enjoy"