When you go on vacation, chances are, you will come in contact with quite a few people who help you out along the way.  Exactly how much should you plan to tip, and who should you tip?Before you head out on vacation, check with your resort to see the exact policy around gratuities.  Some hotels and resorts actually have a no-tipping policy, while other resorts charge one fee to cover gratuities.  Knowing that in advance can really help.Starting from your flight – if you curb check your luggage, it’s appropriate to tip the curb check staff a few dollars per bag for good service.  It can be frustrating to pay a tip on top of checked baggage fees, but keep in mind that the airport staff isn’t responsible for the extra fees.Once you arrive at your destination, you may be take a courtesy shuttle or bus.  In general, it’s appropriate to tip these drivers – I am usually more apt to do so if they help with baggage (tip several dollars per bag).  Taxi drivers should also get tipped – I usually tip 15%-20% for the total fare.At the hotel, if hotel staff assists with getting your bags to your room, you should tip them a few dollars per bag, and bell services should also be tipped if they hold your bags for you (again, a few dollars per bag).  If a doorman gets a taxi for you, you should also tip them.Finally, I also tip housekeeping for good service ($1-$2 per person in the room).When you leave on your trip, make sure you have one dollar bills accessible to you, to make it easier to tip.  I hate asking for change, so it’s best to be prepared.Have I missed any situations?Jodi Grundig reviews products for moms, babies, and children on Mom’s Favorite Stuff, and writes about her life at Multitasking Mommy.