Thanks for the update! It is much fun to fly!
This time I managed docking to the tanker in the double-launch scenario on the first try. Although with less than expected fuel remaining, which is probably due to my point-and-go docking approach.
Really challenging is that the RCS controls are mostly inverted when looking backwards while approaching the aft docking port of the tanker. This took my armchair piloting skills to test.
On the fuel payload I guess the tankers will just have bigger tanks, so the tanking will consume the remaining fuel, minus the fly-back reserve.