Related to HAL? Perhaps on the Cruise Air board.
There are a huge number of variables to consider. But, generally, if your flights are the normally scheduled flights, and they are operating normally, if at all possible, they will operate normally. But the plane (and it's crew, which is just as complicated as the plane issues) you get on must be able to be there to pick you up...the delays and cancelations of the day(s) before can easily affect the plane you are scheduled to fly on.