Follow the links on the pages for the 3-D sale (and DVD, if there are any of you left out there). Most (if not all) of these should be Region Free (check with Amazon, NOT Zavvi, as they are always listed as Region B, even though most are in reality Region Free).
The biggest plus is you get access to films that are out of print here, like Pinocchio, Bambi, Lady and the Tramp, Hercules, and Aladdin (the latter two I don't think has even been released on Blu here). It's also likely the cheapest you'll ever be able to get Disney 3-D titles.
Downside? DMR points do not work here, the 3-D movies only have 2 discs - a 3-D blu and a 2-D blu, not the four or five they have here, and few, if any, include digital copies.