as a instructor for 15 years intro dives are easy
diving is easy really your OW yeah more class etc... cause you will be going out on your own and not have someone watching you putting together your gear etc...
we used to do about 15 minutes of yacking a quick check in the pool or even off the back of the boat
then out in the water no more than 30-35 feet with no more than 4 people with one instructor for me even a 1 hour video was longer than what we would do all the time for intros
and this was in the US on Maui where I would do sometimes 20+ of these a days