During our online chat (most Mondays at 2 p.m.), you ask and we answer your travel questions -- mostly. Here's one we couldn't get to last week.
I'll be going on vacation in the Southwest and taking several tours with private guides. What is an appropriate tip? Full day (not multiple days), probably just me and the guide.
For a private guide, tip 10 to 15 percent of the cost of the tour, more if the guide was particularly helpful. Don't forget a couple of bucks for the driver. But check when you book the trip: Some companies have no-tipping policies or might include a gratuity in the cost of the excursion.