Yeah real group sex equals cum everywhere .. it's the not objective to play with another guy's cum but if it happens it's normal .. if it's the objective then that's something else ..
My wife so wanted this some years ago, she adores spunk so much, setting it up became a nightmare, i arranged the night there was 12 men who were up for it, but only 3 turned up, after months setting it up we never bothered again.