The 26th is a Thursday, my experience with Amazon and pre-ordering games is that they will ship the day of release, so with express delivery you will get it Friday 27th - the day after.
If your an Amazon Prime member like myself, then just choose Free One Day Delivery because paying the extra £4.40 is not justified by the time-frame, you should get it the same day anyway.
If you really need it on the day of release, then i think there's a evening delivery option for certain orders which is like the fastest thing ever. But it costs £14-£15, this totally destroys the saving you could make at Amazon's amazing price of £32.96.
Or, if your willing to pay an extra £6-£7, GAME.co.uk post all pre-orders one or two days before release, so that they reach you on the day of release - its happened with everything i ordered from them. Trouble is their price is £39.99.
So question is, is getting the game the same day of release worth £7 to you?
nothing wrong with ordering them from amazon probs get it the release date or day after, however i have found that play ship 3-4 days before release date so u get it either a day early or on release date (obv occasialty the day after but i have only had that once)