I now have 3 babies and a toddler in nappies, some provide up front, some in own change bag and another does both (just to be sure).
I'm getting all over the place with bags, who does what etc and I've decided it would be a lot simpler if I just had one change bag with everything I need for ALL mindees (and my ds) rather than carrying different bags around!
So, my question is what do you do? Do you get them to provide nappies and wipes for you to keep at home so you can stock your own change bag the night before? I think this would be a lot easier but would some parents find this cheeky to ask? I have someone who a couple of times hasn't provided enough wipes in their bag and I've had to buy some to use or they've very nearly run out of nappies in their change bag.
I just want to have one way of doing things throughout the week rather than lots of juggling of bags 
Hope that makes sense!!
Oh yeah, what do you do about spare clothes? Do you also ask for these upfront and just replace if you needed the spare set one day?
Anything else I may have missed?