Bugger, that 11am high tide is a problem for the beach drive, we really need low tide around midday. The run down the beach is best done starting an hour or so before low water, giving a 3 hour window before the rising tide cuts us off on the beach. Between the entry and exit points there is no escape route at all.
We might need to readjust the plans if the tides not right. I have a detour that takes us around the back of the beach our we could divert through the Anti Atlas. One to discuss over a beer in Essaouira.