S1E
You mean like the way we did before there was an EU? Am going to go out on a limb and say "yes".
Are you willing to state c. £2000, and your families only chance of a foreign holiday on it?
Or would you wait until closer to the time and see which way the wind blows?
At the risk of thread drift, I can see an “ash cloud” style scenario, where if we crash out of the EU without any agreements in place, flights will be grounded for a few days / weeks until the various legal issues are sorted, as no one (I.e insurers, etc) wants to put their head above the parapet and say “the documentation is legal, go flying”