Use of cellular data.
We're on holiday with 2 iPads.
Have purchased 1 prepaid 30 day validity cellular data provider SIM card installed in one iPad with the intention of Hotspotting this to the other iPad.
But now ... Mrs. ExS insists that we only use the iPad with the SIM card on the assumption that the action of Hotspotting absorbs some of the pre-purchased data just to provide the Hotspot for the other iPad to connect to ?
I maintain that if we use 2 IPads for 30 mins - one Hotspotted to the other - we will use no more of our prepaid data than if we use the 1 iPad alone for 30 minutes each, i.e. each example will only use a maximum of 1 hour of prepaid data use. ( assuming identical Internet use )
Who is right ? ( answers on a postcard please, a description of the technology not necessary ! )