Crocs Insoles?

I start nursing school clinicals next week. I bought a pair of Landau RX shoes that I like okay, but they are not my Crocs. I wear Crocs for work as an OB Tech, and I love them and wish I was allowed to wear them to clinicals. I have wore the Landau shoes to work a few times to break them in. Needless to say, my feet and legs started to ache about 4-6 hours in. I have since saw that the Crocs website has insoles. Has anyone tried these? Do they make other shoes any closer to the feel of Crocs? Any feedback would be greatly appreciated.