Its funny that people say this doesn't fit in RP, but IRL Soldiers joke around with their squads in quite similar ways. Fortnite Dancing (as cringe as fortnite is) is not outside of the realm of possibility. Clones have opportunities to go off and mingle, days of leave, etc, and may spend that time simply hanging out with their brothers. Its much more realistic than, say, 50% of the events that occur happening.
I see an even number of pros and cons for this, so I honestly cannot say a definitive +1/-1. However, I do feel that using the "It hurts my RP" as a poor excuse for a -1