Marc's motivations were mainly being able to lose himself in a fight that vaguely had a purpose to it so there would've been no judgement from that end if Marc had been at the bachelor party. (No karaoke attempt either though so, yanno, just as well.)

"Did get to go inside the Pyramid of Giza," Steven said, because he had a vastly different definition of exciting from Diego. "Won't lie, that was a treat."