DREAM PAIRSWomen's Clear Two Strap Open Toe High Block Chunky Slip on Dress Heel Sandals

Do these run true to size? I’ve read where some sized up a I/2 size and some bought their actual size.

I have bunions and am concerned the strap will put pressure on the big toe which is painful? Does anyone know if it has any "play"?

Where can I get a replacement heel cap?