Some years ago I worked for an organisation where people from across the planet came together for a few days. It produced tremendous arguments between the USA contingent and everyone else as the Americans wanted to eat so early
When we stopped work at 17.30 the Americans wanted to go back to the hotel to dine. Everyone else wanted to waste an hour on the internet, go swimming go shopping or just do nothing.
At least the South Americans followed the Castilian practice of an early dinner at 22.00, suits me!