I am flying out from T2 in early April with my wife and 2 young children. My flight departs at 6.45am. I have booked a hotel room for the night before as well as Valet parking with official Heathrow parking. The valet parking opens at 5am and my travelling time from hotel to airport will be around 10 to 15 minutes. Am I leaving it too late time wise or will I be okay with check-in and going through security. I also note that the airline (Turkish) i'm flying with departs from the satellite terminal at T2. Your help and advice would be much appreciated.