In our luggages we had our two daughters (14 yo and 21 mos) Jr Rec Duffles (filled with their stuff), a fresh market thermal tote, and my Vary you backpack to use as a purse when we got there. We use space saving travel bags for our clothing so we were able to pack all of this into two luggages and had minimal carry on.
The versatile bag was a lifesaver the entire trip. We ended up using that as the diaper bag. The fresh market thermal tote saved us money on our 4 hour drive to and from CA. Rather than buy a disposable foam cooler, I lined it with a trash bag, loaded it with ice from the freezer and packed the milk, sandwich items, and snacks. I also used it when we went grocery shopping in Vegas (we stay in a timeshare and cook rather than eat out every night.)
When it was time to go home, my vary you backpack held every last minute item you could imagine. Like extra chargers and the gps. The versatile bag, held 2 pairs of house slippers, my flat iron (in the flat iron case), diapers, wipes, jackets, a ton of snacks, and a huge bag of trader joes sour cream n onion corn puffs. That helped take a load out of my luggage that was a little overweight. The organizing backpack was now filled to the gills with every other thing that put my 2nd luggage over weight.
Now, I knew that we'd go home with more stuff than we came with. So now, those two Jr rec duffles that were originally stuffed in the luggages were now carry on bags. We had enough room to pack all our stuff and not pay any baggage fees at all.
I will never travel without Thirty One EVER AGAIN.