these are super cute! aren't some novi stars dolls made this way? I wonder how those are holding up so far?
Since Novi Stars are pretty recent, they don't show any signs of drying liquid. My Una Verse is fine, but I've heard of other people whose Unas strarted leaking due to a factory error or a strong hit against the floor. Just treat her gently and I'm sure she will last for years (maybe not too many, but then you can refill her!)
I think my little water-filled alien will love one of these lovely princess ponies. Cadence is my favourite one, but Luna follows the theme of Una (Night, spacey things) Hum...