Just joining my voice to the choir here. No you are not paranoid at all. From the sounds of it, you are the only responsible parent at the school. Simply opt out of the trip. Try to find a better creche for your kid, or find a way to change the one they are currently at.
3 Years Old is just not an appropriate age to be going on field trips. Heck I was at the JHB Zoo a few years back and a school trip of 6 year old kids came through. That looked tough enough for the adults to handle.
Don't even offer the car seat, as they probably wont know how to install it correctly, even if they gave enough ****s to want to install it. Just opt out.
3 Years Old is just not an appropriate age to be going on field trips. Heck I was at the JHB Zoo a few years back and a school trip of 6 year old kids came through. That looked tough enough for the adults to handle.
Don't even offer the car seat, as they probably wont know how to install it correctly, even if they gave enough ****s to want to install it. Just opt out.