We stayed at the Holiday Inn Express – Frankfurt Airport. It had a regular shuttle bus to the airport and seemed to be very popular amongst business travellers and spotters alike, we chatted to a few different people on the bus. Its about a 10 minute drive from the airport, in the evenings getting to the hotel was fine, but the shuttle bus was fully booked from 0700 to 0930 on the sunday morning, so we opted for the city tour which was only marginally more expensive than a taxi!!
It costs £56 euros a night including breakfast, I work that out to be £37.50, and was well worth the money with good rooms, just it might be a good idea to reserve your space on the shuttle a few days before you arrive.

September the 12th is I THINK the date that was being thrown around, but there is no official confirmation of anything at all, just rumours and speculation.

The food is still like that, Frankfurter and German Beer, but when in Rome…

Whoops there seem to have been some replies I didn’t see there.
The terrace was really difficult to find, we took about 20 minutes to find it in the first instance, and a fair bit of wandering the next day.
We found however that it was signposted from OUTSIDE the terminal but not inside. Basically the easiest way to find it is to go into the main Lufthansa Check in hall (Its all yellow in there!) and then go up the escalators to the top level, and it is up there past a cockpit, a model shop etc. If you go up to that level from further in the terminal (I think its area B) then you have to walk through a Greek vase and plate exhibition to get there!
I think there might be some express security things, there certainly was something like that in T2, but there were no transatlantic flights in the evening so i didn’t see anyone using it.
I am still looking into FRA/CGN/DUS in the summer, trying to find some of the best prices, but its rather complex trying to visit 3 differnt airports in one trip, and rather expensive too!