Lessons from Libya ......
1. Most evacuation plans are activated too late and fall down because of comms failures and /or airport / port congestion.
2. Best plan is to go early on any available commercial flight. Well in advance on serious trouble brewing up. But clairvoyance ain't easy....
3. When you miss that chance, consider just staying at home and sitting it out. Most serious unsafe situations occur out on the streets and don't last more than a few days.
4. From the UAE if the airports are clogged you've got 2 road options - the easy one into Oman but the road to Salalah is arguably the world's longest cul-de-sac.
The hard one is via KSA - but they'll probably want visas and all sorts of car paperwork and by the time they decide to throw open the borders they'll be clogged too.