One thing you have to consider, is when people are on vacation, it's human nature to want to have a mental escape. Tourist act weird, because they take the opportunity to vent off some built-up energy they have from doing their 9 to 5 jobs back home. I think tourist are sometimes too judgmental about other tourist over things they say and what not. Sometimes it's good to take a step back, relax and remind other tourist how to be curious without letting it bother you too much.