I should have said how many we send too!!
I usually send 5 nappies but they usually use 4 and that's from 8am to around 5pm ish... They do change more than I would at home.
As Isabelle goes three consecutive days I usually take loads on the first day and then topup depending on how many are used as sometimes they go through all five!!!
I've given them some fleece liners to pop into disps in emergencies...