TDA has told us statistics on riders for our trip:

50 full tour riders

33 men/17 women

15 countries: Canada (10), Britain (7), USA (4), Germany (4), Netherlands (4), Australia (4), New Zealand (4), Switzerland (3), Ireland (3), Italy (2), Denmark (1), Brazil (1), Belgium (1), Norway (1), South Africa (1).  This is first full tour crew with Italian and Brazilian riders.

Age demographics: Teens (1), 20s (15), 30s (8), 40s (10), 50s (10), 60s (5), 70s (1).

The crew is slightly younger than I would have guessed and slightly higher % of women.  However, overall somewhat in line with my guesses having watched a few of these rides.  Will be fun to meet everyone in Cairo.