Having been on an enforced gluten-free diet since soon after Domino's appeared in Edinburgh I had very little experience of them until recently, when they started doing a GF crust. I then discovered that you can book online and pay with PayPal. And that there are usually a bunch of codes freely available to get discounts and deals... oh dear me, this might be too convenient!
Other than the GF crust being only available in the smallest size - and with no options such as stuffed crust - I can say nothing bad about my experiences; they have clearly taken their time to produce a convincing and tasty alternative for those who cannot eat the 'normal' pizzas. Delivery has never taken longer than 40minutes (Saturday evening) and on one occasion the pizza arrived in around 20, before I was even expecting it.