LOL, there are lots of Dovers, we're very proud of them!
If they haven't rebooked, the most convenient, IMO, is not actually in Dover, it's the Ramada at Whitfield on the A2 where there is parking. All you do on the morning you travel is drive down the A2 a mile or so, Jubilee Way takes you right to the roundabout at the docks.
We don't have many decent hotels in Dover, lots of small ones and B&Bs. There are two in the centre of the town on the A20 - the County Hotel and the Dover Marina (latter is a Best Western).