Is it Impolite Not to Tip a Bellman if I Don't Have Change?
A: Overseas, tipping is by and large not expected at every interaction. So if you don’t have the right change, you won’t break your bellman’s heart. That said, handing out a few American dollars is also acceptable; it’s a nice gesture of thanks and—in some parts of the world—U.S. dollars are as welcome as local currency. If you have no change and your bellman did a top-notch job, it’s worth seeking him or her out at the end of your stay to deliver a tip.
In the United States, where porters often make less than minimum wage, tips are expected to supplement salaries. So don’t be shy about asking a bellman to break a larger bill. “These people are working for cash, so they have cash on hand,” says one bellman at a New York City hotel. Otherwise, get your porter’s name and leave a tip with the concierge before you check out.