The retreat that was set up for teacher training is about a month long I think. There are people attending who don't necessarily want to become teachers, just for the sake of a long retreat. Worth looking into it I think.
Amma's ashram in India or US (http://amma.org/) could be an option if you are interested. I haven't been to her ashrams, but have been to her programs in US and India and have enjoyed being in her loving presence.
The theme there could be different from AYP - more bhakti oriented, with devotional songs (bhajans) and emphasis on service (seva). But I feel that reading AYP lessons helps me to accept and benefit from Amma's messages better.