Hi Angela!
Welcome to planDisneyl.
It's so nice to answer questions from fellow guests from the UK, and thank you for sending in this question because many of us want to explore all ticket options to find the best deal for our trip.
Yes, you can purchase tickets at any Guest Relations window at all the Walt Disney World theme parks, both water parks (Disney's Typhoon Lagoon and Disney's Blizzard Beach) and at the Welcome Center at Disney Springs. Ticket prices vary, but for your arrival date a 1-Day, 1-Park ticket for Magic Kingdom Park would cost US$174 + tax. Please note that this price is subject to change.
The price quoted above is for entry to one park, in one day. If you want to hop to another park you would have to pay an additional price for a park hopper ticket, and the
water parks and Memory Maker are not included in those base tickets. If you are visiting the theme parks for two or more days I would encourage you to look at the UK-exclusive tickets -
7-Day or 14-Day Magic Tickets. These tickets are offered at a very competitive price, and give you 7 or 14 days of entry to all four theme parks, park hopping to any other park (subject to capacity), entry to the water parks (whichever is open), and use of
Memory Maker for all those photos taken by the Disney PhotoPass Photographers around all the parks, and digital downloads of those fantastic ride photos (at the point where we are screaming the most!!). When you look at the current prices, you will see that they are a very good deal for UK guests. You have 15 days in which to use your 7-day ticket, or 18 days in which to use your 14-day ticket, so they give us a lot of flexibility.
Please come back and visit us if you have any further questions, and you can
send me a direct question if you wish. We are very happy to help you plan your magical holiday at Walt Disney World!
Sue