Alaska Marine Highway - Delays

We are unexpectedly sitting in a coffee shop in Sitka having some extra internet time. Our ferry from Sitka to Petersburg has been delayed twice. Originally we were to leave Sitka at 3:15am, thankfully the Sitka Terminal worker called us yesterday and let us know they boat was delayed until 7:30 this morning. Unfortunately when we arrived at 7:30 we were told that the ferry missed the tide and wouldn't be in until at least 1:30 this afternoon. With a twelve hour trip to Petersburg, we are hoping for a later departure. We have booked a cabin on this leg so we have beds to sleep in - but arriving in Petersburg at 2 or 3 in the morning means we have to get up in the middle of the night to disembark. We were told Sitka was the most susceptible to tide delays. We just had such good luck so far we were hopeful . . . ah, life is still good, we are just past the half way point in our trip, another 6 weeks to go.