Many of my friends tell me that their daughters seem to be able to go nearly all day before producing the slightest 'tinkling' so I think it sounds as if girls do tend to 'go less'.
I am glad that you have made progress but wanted to just add some useful advice that I received for the next potential sticking point: That being the "please just try for a quick wee before we go" - "NO! I don't need one" situation and only being in the car for 10 minutes before they announce "I need a wee"!
Try this it works for me, no matter how adament my two are that they dont need to go to the toilet ..... my response is :
Oh, okay, but do you know, if you sit on the toilet anyway and a wee comes out that means its a 'MAGIC wee'. They try every time and invariably something comes followed by a very pround grin
Now all I say is "Has anyone got a magic wee?"
Its so tempting to use easy up pants but I think it seems to give children a false sense of security and is perhaps confusing as they are very similar in feel to nappies.
I believe that children learn quicker through experience and if they wet themselves then they remember that feeling of wetness and discomfort much more. Forethought isn't a toddlers priority.
I never used to rush to change wet trousers and pants and always went through the whole process of putting wet clothes in the wash basket, cleaning my sons up and getting fresh clothes to wear TOGETHER so that again the experience of doing this a couple of times stayed with them and acted as a deterent when those familiar feelings of needing a wee came about. Coz having to do all this and not play was a bit BORING for them!
If you do it for them they have no memory of it as being undesirable. Spending a couple of days at home doing this made it work so quickly by the time we were out and about it was sorted.
Always remind them that if they don't go to the toilet when they needed to then they'd have to go home to sort out fresh clothes - Do be prepared to go home as well. Try dummy outings if it helps and expect to come home.
Explaining things to children of a young age can be repetative & frustrating. Grown ups learn faster by experiencing things for themselves, children do too!
Good luck!