It's good to give it morning sun. Depending on the properties of the cultivar, it will be able to get more sun. But some cultivar's leaves will be burnt by bright sun all day.
Of course because roots have been pruned the logic that it will lose more moisture in the sun and that this will put more depands on the roots to replace that moisture, applies.
Partial shade is good too, of course. Full shade all the time isn't ideal and will probably slow down growth and reportedly lower the number of new flower buds. Full sun all the time also has it's problems. Especially in the case of an azalea with limited roots and in countries were the sun is quite intense, humidity low and the heat quite high.
The more sun, the more water of course. Don't let the root ball dry out completely. You have 70% turface so overwatering doesn't seem to be a significant issue.
Ooh, and when it is growing that of course is good. If it was dying, it would drop leaves and show signs of drought. It probably grew more new roots than new buds since collecting. Surely if it had had transplantation shock, you would have known by now.