Not really, it comes out of a 'pot' of hours via the MCCE European Agreement.
Yes. However the MCCE tariff for the KC-767I covers the 'hours exchange rate' for mutual services - there's no saying that 4 TriStar hours are offset by 4 KC-767I hours, for example. And who picks up the incidental costs for hotac, T&S etc. when another nation's assets are used for such a deployment?
One hears a rumour that the RTB could have been supported by a TriShaw, but that the reliability of the old beasts is nowadays so poor that pressure was brought to bear to ensure that the KC-767I was also used to support the recovery, so that the Typhoons could be reasonably sure of getting back on the planned date....
Still, at least the Italian air force actually
has a 21st century tanker which can support its own front-line fighter deployments. As does Japan, Germany, Canada......