I plan to join [activity]. My usual shoe size is [details], and any known difference between my feet is [details or none]. What sizing system is used for rental shoes, and can I try them before confirming collection? Can I change sizes if they do not fit? If no suitable shoes are available, can I decline collection, and how are shoe charges and related activity fees handled separately? Please identify unconfirmed stock and conditions. I am not judging suitability from size labels alone.