That actually went well.
We left on Saturday morning with the intent of stopping in El Paso for the night. We had to stop every 2 hours so that Sophie and I could go potty. I will say this, that kid stayed dry the whole drive and never once complained about not-so-nice accommodations. The kids were satisfied to play with the iPad, iPhone and other random toys. It was pretty quiet. Gideon and Milly slept a little but Sophie never closed her eyes once.
At the hotel in El Paso, we only had one crib for Milly. We put Gideon and Sophie in the sofa bed for the night. Gideon already has a tough time sleeping and this night was worse than most. I finally hopped down and hauled him into bed next to me. There was not a lot of sleeping that first night. Of course, he made up for it the next day in the car. Mommy...not so much.
Finally on Sunday we arrived at Nana's house! There was much rejoicing, hugging, running and digging in the backyard. The great-grandparents got there on Monday and there was even more hugging and spoiling.
My SIL followed the kids around all week with her camera. She is my new hero.