I got trial pairs from Vision Express in Yas Mall and also from Magrabi - I showed them my prescription and they each gave me two types. I've yet to find one that works well. One pair was very drying to my eyes, one made me feel like I had vertigo, and another were very hard to get off at the end of the day. I'm still searching but may just order some from home or use my regular contacts and feel like I am not seeing all words on the computer clearly. Good luck!
Park and Shop in Dubai had them over the summer, not sure they are still available though. You can also order them off desertcart.com or amazon. Ive ordered from both and desertcart is very pricey, amazon was better price and the shipping was reasonable.