Much cheaper for US bookings also, we have just booked for Feb 2024, family of (2 adults & 2 children) in an interior.
UK site quoting £3,300 ($4,100) or £4,600 ($5,700) with drinks package, looked about online and booked with *****.com in the US, $3,100 (£2,500) or $4,000 (£3,200) with drinks package.
Only difference I can see is the UK price includes gratuities, even taking these into account we have saved around $1,000