I can't beleive I am the only one

Robby has a teacher that celebrates birthdays by having the whole class walk to McDonald's once a month. McDonald's is close by the school and only requires a walk through a small plaza's parking lot. Whomever has a birthday in that month gets so much to spend towards their purchase. The kids love and look forward to this. This activity, however lost it's appeal to me this month as today is the day and it is now five degrees ( negative nine wind chill) The high is supposed to be a warm old twenty five degrees but still. Now maybe I am over protective but letting a group of kids walk in this weather is just ludicrous. There are icy spots in this parking lot that could cause a car to slide, hitting anything or anyone in it's way. The wind chill alone could cause problems in any child not to mention one who has a history of health problems. This being said, why am I the only parent who has refused to sign the consent form for this month. Are these parents so go with the flow that they don't think or worse yet care? It amazes me. I pray that all who go get there and back safely and without incident.As for My kid he may be sad that he misses the walk but at least I am assured that he will be safe and not end up in the hospital due to complications of being out in this cold too long.