Peter,
Sorry for the delay in my response. I was vacationing with family in the Berkshires for over a week, trying to catch the change of colors. Haven’t seen that in many years.
I always quote in US dollars on this forum, and in any articles that I write. $30 US/meal is a fair cost to pay for a dinner on Ambergris Caye at a nice restaurant, assuming that you order a glass of wine or nice cocktail. The Cayes and Placencia are the higher cost areas in Belize, due to tourism. The price at a comparable restaurant in San Ignacio or Corozal would be about 2/3 as much.