I have a lovely 16 month old dd who has just started to hate supermarket shopping. She has discovered she can stand up in the trolley seat and consequently needs to be carried whilst I push the trolley! We are just about ok with supermarkets that have straps in the trolley seats but now must avoid tescos, marks' and any others who don't offer this facility. Any advice? Ps note to supermarkets please all install the trolley strap eh?!