I've got a Vano Icarus 600 and the last couple of times we've had it out the DCs have been awake far too early. I have been thinking about buying a roll of blackout material and trying to make some kind of drapey thing to go over the inner tent. Am I deluded, or has anyone else either tried this or got any suggestions? (we've tried the whole 'keep them up til late' thing - we just ended up with a very tired and grumpy PiffPaffpoff family the next day, having been up at 6...)