JKhedrup wrote:What are the commonly performed rituals during the days of the ordination that do not involve the actual transmission of the precepts? What would be the shortest block of time in which a Triple Platform ordination would be conveyed?
Apart from the days of the actual transmission of the precepts, there is still a lot to do.
Above, I have mentioned the various classes and so forth on the Vinaya, Pratimoksa, Bodhisattva-sila, etc. texts that are taught. Won't repeat here.
In addition, quite some amount of time is spent rehearsing the ordination rite itself. Involving as it does a fairly long ritual, including various forms of invitation / request, chanting, recitation, call and response, all interspersed with much bowing and prostrating, all while wearing the various robes, holding sitting mat and carrying bowl, getting everything clearly sorted out is a distinct advantage.
But as for "other rituals": often, services such as the Yoga Flaming Mouth (Yuqie yankou) are performed, perhaps at the very start of the whole event, or immediately after one of, or each of, the three transmissions. That is fairly common, I understand. Often, these are as much for the laity who will gather around for such events. Now, given that the laity can't participate in the transmission proper, but they are eager and keen, this is one way for them to participate.
The daily liturgy is still is progress, of course. Usually, this is the stock standard Chan school daily liturgy (chanmen risong). Morning includes the Surangama mantra, the ten small mantras and great compassion dharani (mantra), etc. Evening includes the eight-eight Buddhas repentance and the smaller Sukhavativyuha (ie. the Amitabha sutra).
The shortest length of time to do the whole thing? I am not sure. In theory, I guess one could do them on three consecutive days... but who would want to?! In practical terms, about 3 weeks (21 days) is the shortest I have heard of; and 108 days (3.5 months) is the longest.