It still depends on where you have the dinner. If you have a dinner at 8pm in UK, you could leave France after 8pm and arrive for your dinner at 8pm again. What would you expect to happen - get the alarm twice?
What if you actually wanted to call someone before their dinner and that's why you put the event in? If that person was in France in this scenario, you'd want to call them before 7pm UK time instead. Calendars can't guess the context - location of the event depends completely on what you put in.
What if you actually wanted to call someone before their dinner and that's why you put the event in? If that person was in France in this scenario, you'd want to call them before 7pm UK time instead. Calendars can't guess the context - location of the event depends completely on what you put in.