Four Door Windows

The entrance door to the flat opposite was all lit up when I looked out my bathroom window after Photo Soc this evening.  No time for any alternative.

Congratulations to blipper 'WoodleyWise' who solved almost all of my cryptic clues to get:
Gen2 is going on a trip, holiday of a lifetime, taking a long haul flight over the Atlantic Ocean, maybe see some relatives.

And now a couple of supplementary clues:

My first night will be spent where UK TV gardener, Don, soundly killed the radio star.

Then I will be joining a film star, Tom, from a top film franchise.
(That's a clue, not a true fact)