True. Just ask any university/college. My youngest went to a small one in Pennsylvania and I knew a volunteer fireman from there. They had numerous calls for fires from lint as college students aren't very good at cleaning out lint traps. How good do you think cruisers clean them out if they think it's "not their job"?
As D+ we each get one bag of free laundry, but it's just underwear, socks,t-shorts and pjs which is fine. But, before we got any free laundry, we just packed what we needed and occasionally washed a few items in the sink. Not a big deal.