Coming from England, can we buy riding shoes there, but we will bring sneakers?

sneakers are fine for riding - we do not sell boots here - there are stores in tucson that sell riding boots but they are definitely Not Necessary - you will be quite comfortable in sneakers

Sneakers or hiking shoes work fine. You dont need cowboy boots but Tuscon is close by if you need to buy anything (you can easily get Uber to pick you up). I would recommend sun protection: hat, neck scarf, long sleeve cotton shirt, and even riding gloves if you're sun sensitive and burn easily.