I decided against buying from Apple in UAE and instead upgrading through EE. I use the data on my Watch a lot without my phone, and EE's £7.00 "Data Plan" is capped whereas it's unlimited when the Watch is purchased from them too!
Here's my experience:
I opted for the Graphite Stainless Steel 44mm. I pre-ordered on release date via telephone - their online order/upgrade process insists on texting a validation code to the internal EE number associated with the Watch on my account which obviously the end-user cannot access. Sigh!
I was initially told by the Advisor that I should expect to receive the Watch within 24 hours. In typical EE fashion, I didn't receive any such order confirmation. I wasn't expecting to receive the Watch on release day anyway - but contacted EE to at least request an order confirmation as I saw Tweets with some initial orders being cancelled due to a system glitch.
I was told 24 hours was incorrect for this particular model, but to instead allow up to 7 days. 7 days have been and gone. No update from EE. On their forums, Twitter and telephone support - they keep repeating the same line that they are awaiting stock from their supplier and to check the DPD app. Oh, dear!
I'm surprised given EE's a preferred partner with Apple etc., that they aren't being allocated stock based on orders and that they seemingly have no indication of when they may receive stock.