Am currently staying at the NRT Hilton. The breakfast voucher states :" You may also select a full buffet breakfast for a surcharge of 1.270 Yen".
The pens are indeed no longer Hilton but the amenities in the bathroom are. Got upgraded to the 11th floor with a nice view of the NRT runway. Also received a voucher for the pool/gym. In room intenet is located close to the TV / wall opposite the bed, but they do provide a 5m cable. I guess it is OK.