Disneyland Paris hotel and ticket packages can be purchased from ANY country site, not just the country you live in. You should check many sites, not just the UK or USA one, as the UK one can be more expensive than the French or Irish one
www.disneylandparis.co.uk UK
www.disneylandparis.ie Ireland
www.disneylandparis.fr France
www.disneylandparis.de Germany
www.disneylandparis.nl Netherlands
www.disneylandparis.be Belgium
www.disneylandparis.it Italy
Have each one open in a new tab, so that you can compare prices
Once you find a price that suits you, you need to make the booking over the pone by ringing +33 1 60 30 60 53 This is the French phone number, so international rates will apply
You then tell them you want to book using the offer you found on (country) website
Booking Office opening hours (Paris time):
Monday to Friday: 9am to 8pm
Saturday: 9am to 7pm
Sunday: 10am to 6.30pm
Everything is done electronically, so you dont need an address in a different country. The person on the phone will take all your details, name, address, credit card information. You will pay a 15% deposit , with the balance payable 30 days on or before your arrival date.
You will get a booking reference number. With this number you will need to go to whatever country website you booked with and create a My Disney Account. You will then be able to see your booking details and you can also pay your balance online.
You will also get an email, which can take a few days to come through, with your booking details.
All you do is either print your confirmation email or your booking details from your My Disney Account and hand it to the hotel reception when you arrive. At the hotel check in you will get your park tickets and a hotel easy pass which gives you access to EMH.
I have booked my February tip like this. I live in Ireland but I booked the offer on the French website. I created a My Disney Account on the French website and all of my booking details are there.