A survival plan isn’t really complete until the potential victims have used it.
When my children were still living with us I did throw a mattress out of a bedroom window, climb out into the roof of a bay window and jump down onto it.
@Broch ‘s talk of revising plans made me realise that neither of us two remaining have any alternative to the single set of stairs. Nothing we can sensibly do other than the multiple alarms in each room with the main ones interconnected. Thanks for making me think.
Hardly a wildfire but parts of my garden could easily catch fire right now.