Thanks for having a go everyone, to sum up....
1.(Jon queues) up(anagrind) for a shapely girl(9)
JUNOESQUE
2.Shipwreck aftermath....aliens kept in jelly(6)
J-et's-AM
3.Gay in a way, with blithe spirit(8)
JO-VIA-LLY
4.Prison(jug) first, Unburdened Later, And Rope [about the neck](7)
JUGULAR(Chambers, relating to the neck)
5.Only(just) valid(just) on gravy(jus) t[rain] in dry weather?(4)
JUST
6.Patient one(Job) losing(less) the head,(ness) this isn't(read as IS NOT) working(11)
JOBLESSNESS
7.Rabbit(jabber) leading cow back(woc) to the herd,(ky=cows) nonsense!(11)
JABBERWOCKY
[It's impossible to explain] unhappy(anagrind) endings
(7)
MYSTERY
Thanks again for playing, have a great New Year!
ixion