Help with 20% AP discount

[PumpkinPilot]

Our family is planning a 4 day DLRP trip in June and looking to get the Discovery APs with 20% discount for living at the same UK address.

The only option on the Disney UK AP page is to call
or purchase in person (and suffer the blackouts on days 2&3). On the French AP page (with a lot of help from Google translate) the tickets can be bought online but there's no discount or option to apply it?

I called Disney who said it's not possible to get this discount in advance and the only way to do so is in-person . I asked whether I could pay the full amount now and be refunded the difference after showing proof of address in park, but apparently not as tickets are non-transferable and non-refundable.

Has anyone experienced the same issue, and found a way round it?

Grateful for any help/advice anyone has on this.

 

[cwis]

Not sure that can be done online or by mail.

This page in French (https://www.disneylandparis.com/fr-fr/pass-annuels/offre-famille/) specifically says the offer can be bought only 1) at the AP desk 2) at the Guest Relations windows outside the parks.

Also, just wanting to make you know, the 2 contractual blackout days from the Discovery AP cannot be lifted when staying in a Disney hotel.