1. Expect one night (typically 22-30h rest), sometimes 2 (depends if you get a full bodyclock night or not)
2. Two or three sectors. Hkg-sin-hkg or hkg-dac-han-hkg or hkg-pvg-hkg-kul- layover etc... varies from fleet to fleet, with the season, with the number of crew, sickness rate, etc....
3. 3-4-5 rule. Just kidding. After a long haul, 3 days or more, unless it's to Australia
Only 'hard' rule is 84h a month.
The rest is a joke (roster disruption is used all the time to accommodate 'soft' rules)