If the kids are really little - two outfits daily, for sure. Don't take anything that would upset you if it was destroyed or stolen.
Buy outfits in colors that go together.
I took Woolite with us on both trips and washed in the hotel sink. We looked like the Beverly Hillbillies, but so what? When was I ever going to see the hotel staff again. Ironing wet clothes helps them dry faster.
Becky
The Woodworth Family in Beautiful San Antonio TX