The best way to potty training is going the "no diapers" route. Trust me, this is my 2nd go round working with my toddler Kenzie! Of course when I say no diapers, I do NOT mean even at bedtime or for emergencies out in public! Pull-Ups are perfect to use when the time has come to train that mini to potty!
Kenzie likes to use the bathroom up until she falls asleep, so a regular diaper will not work. It ends up ripping or not staying on because of her taking it off and on. A Pull-Up makes this super easy. She just pulls them up and down like she does her panties. And if she potties in her sleep the Pull-Up is to the rescue. :P
Also, stashing a few Pull-Ups along with panties and a change of clothes in your diaper bag is a good idea. Being gone from home for a long time with limited potty breaks is just torture to that toddler! They are still learning and may have an accident or two. So it is a good idea to bring in the Pull-Ups to help a mama out!