Designing conflict in #2: bar crawls
Bar crawls are designed to promote negative behavior -- basically lots of drinking, inebriation, etc., which usually includes a lot of misbehavior, public drunkenness and nuisance crimes like public urination, vomiting, litter, etc.
So, if you don't want misbehavior, gross public drunkenness, public urination, massive amounts of litter, etc., you probably should outlaw bar crawls, even if it costs bars some business.
This has been a problem in DC and Arlington.
-- "After a Disastrous Halloween, D.C. Bar Crawls Face New Regulations," Washington City Paper, 2016
-- Pub Crawl Applications and Requirements, DC Alcoholic Beverage Regulatory Administration
-- "New rules for St. Patrick's pub crawl in Arlington aim to curb drunken hijinks," 2015
And according to the Guardian, it's a big problem in Prague, "The fall of Prague: 'Drunk tourists are acting like they conquered our city."
This is a classic case of "designing conflict in."