On your first family trip, did you end up using manual settings the whole time, or did you end up often using auto settings because of time constraints, etc.
I am also fairly new to photography, so... to me, I saw no shame in program mode for the times when I didn't want to be thinking TOO hard about settings and instead wanted to just experience what was around me.I used a mixture of aperture priority, program mode, and manual. (The manual just for a few night shots.)
Don't sweat it... have FUN! We were there Sept 19-25, six days in the parks, and honestly it still wasn't enough time--not to JUST see the parks and not to JUST take as many photos as I'd have liked--so mixing photography with the sightseeing, well, we did miss attractions and I did miss many shots.
But it was an absolute blast. Like skr8pn said, just try to get a balance of photo taking with sight-seeing... and accept that you can't do everything and you can't get every picture, and concentrate on the magic of being there.
One of my best memories of the trip has no photographic evidence--first night there, walking down Main Street on the way out of the park at closing, and dd (5 years) stopping dead in her tracks as they did the Kiss Goodnight for the castle and very seriously making a wish. She was glowing. Does a part of me wish I had the camera out and ready to go just then? Yes. But another part of me is glad to have seen that look on her face and experienced that moment with her without a camera between us, too... glad to have been fully present in the moment with her.
Conversely, it was also thrilling to come home and see my first ever attempts at a long-exposure night shot, in bulb, result in some pretty pictures of the Sorcerer's Hat at DHS.
So... go for it, get some of both experiences--with and without camera--and have FUN!
