Heavy Loads out of season?

Happy Sunday morning 8D
Mrs P and I are flying out to MCO on VS27 on 20/04 in Y and it seems that this flight is becoming very full quite quickly. No UC seats left and a sprinkling in PE & Y
With the 15 still operating as well (UC full on this as well) I am just curious as to why
Can anyone educate me on this one, please |:)
Mrs P and I are flying out to MCO on VS27 on 20/04 in Y and it seems that this flight is becoming very full quite quickly. No UC seats left and a sprinkling in PE & Y

With the 15 still operating as well (UC full on this as well) I am just curious as to why

Can anyone educate me on this one, please |:)