The misinformation in this thread is so bad.
When Toontown closed Silvermist, Iridessa and Fawn were "retired". Rosetta, Vidia, Terence and eventually Periwinkle are the fairies that meet with Tinker Bell in the nook at Magic Kingdom. The intended plan is Rosetta in Spring, Vidia in Summer, Terence in Fall, Periwinkle in winter. The use of Fawn and Silvermist currently in Magic Kingdom likely has to do with friends of Rosetta being spread thin due to FoF rehearsals and some other character M&Gs I won't discuss for magic purposes. Vidia has also been covering in the Nook and she is not the "scheduled" fairy.
ONE YEAR during Flower and Garden, in between the closing of Toon Town and the opening of the Nook, Tinker Bell met regularly at Epcot. She did so with Vidia, Rosetta and Terence and there was some alternating pattern.
The photos posted above of Fawn, Silvermist, & Iridessa were one day training meets at Epcot in preparation for the Limited Time Magic Fairies week event, which brought back Silvermist, Fawn and Iridessa. This event lasted one week but the training of these characters allows for them to be currently used (which is why they can now be used at the nook).
The photo of Vidia training is simple and tradition character training at Epcot. The photo is from August 30th so how that has anything to do with Flower and Garden is beyond me. Vidia is a semi regular character and they were hiring for her in late summer, which is why her friend needed to be trained. Also one day training. That photo is from the same day Meg trained at Epcot. Also one day. Not scheduled. Zero to do with Flower and Garden.