I take it back. There were Tyrell and Martell ships in Dany's fleet. There was enough of a time gap to cover Varys gathering a fleet and bringing it back to Mereen.
Originally Posted by Piobaire
Has anyone else thought that since we now know Jon is a full blooded Targaryen he should theoretically be immune to fire and be able to bond with dragons? Have there been any scenes where Jon showed a resistance to fire in the past?
At least in GRRM's interpretation, Targs are not immune to fire. Dany's thing was supposed to be a magical event of some sort (the showrunners just reused it), although there was build-up to it in terms of her not being sensitive to hot water and stuff like that.