All the answers are associated with a family or formal party.
1) Might it pop over to Ireland? Hardly that far (4)
2) A winner, or just in the right spot, you could get this (5)
3) It could be something to sit on, bit it would make a mess if sat on by accident (6)
4) A mere bagatelle, but it should be tasty (6)
5) Headgear worn at the hustings (5,3)