My teenage son was my dive buddy for our Coz trip this month. He had only 6 OW dives, with the last dive 1.5 yrs ago. I disclosed this to our DM and a private DM was strongly encouraged. I took the advice and 3P's arranged for Oswaldo to do a Refresher with my son on day 1 of our trip. Oswaldo is awesome! Very thorough and he made my son feel very confident and relaxed as evidenced by his very conservative gas consumption. I stayed with them during day 1 of 2-tank dives and I re-learned a few things LOL!
If you are interested in EAN, 3P's will train & certify you right on the boat. On our trip we had a young couple who wanted EAN cert's & after they completed the quick & easy book-work, 3P's did the practical course on the boat. I thought it was great because the students measured both my tanks in my presence as part of their course work.