In chess, as in life, it is what it is 'til it's over.
I'm not ruthless about time controls, but I do claim timeout wins unless my opponent sends me a message or flies a vacation flag. That's not asking too much.
Tournament Entry Rating is calculated by the formula (CurrentRating + HighestRating) / 2. The entry rating will never drop to more than 100 points below your Highest Rating.
Rated stats are updated within 24 hours of the last completed rated game.