"Außerdem mag ich Partiys und Tanzen, also muss die Person das auch gerne mögen"
"Die Person muss auch Pausen machen und fernsehen, wenn wir müde sind"
"[...] weil ich es mag, Museen zu besuchen und auf Konzerte zu gehen"
The first sentence you wrote is wrogn cause you used "nehmen" and in general i think i know what you want to say but im not sure enough to correct it, just in case so that i dont correct it into smth you dont actually mean.
And just as a little tip: you use "müssen" a lot, maybe try and change it around with "sollen" a little bit, just to change the sound of it