Will there be a second shuttle on the pad ready for a rescue mission should there be a problem??

or has that problem gone away now???

When does Endeavour roll out to 39B? Seeing two shuttles side by side is going to have me haunted by memories of Armageddon - noone wants that.

Is it still even Endeavour?

"the 3.4 mile journey from the Vehicle Assembly Building to the pad will take around six hours, NASA estimates"

I hope they remember to pay the congestion charge...

...of the ancient 80486 computers then?

The shuttle might have proved an expensive and not entirely reliable way in to space, but this is the sort of job it excels at, and this mission is a fitting tribute to the closing stages of both it and the telescope's life. Without the shuttles ability to service it, Hubble would have been a huge flop rather than providing some of mankind's best views of the universe. Well done to NASA for allowing this last servicing mission to go ahead, and best of luck to the crew in their task.