Congrats on getting married mate.
I will be next year, sounds like we are after similar things, we have booked are big tents, and have gone for a company called Papakata. i suggest checking them out:
http://www.papakata.co.uk/
think i'd like a jazz band, so am on the hunt for one of them. Also gobsmacked at how expensive food is!
Yeah papakata don't cover my ends unfortunately! But it's cool, got a Capri style marquee now, quite mental layout I've made up!
An music wise we've got a dj set up, and EPIC dance floor with lights an sh!t!
An food we've now got a fish n chip van, stone baked pizza van, ice cream van and a BBQ
Feckin sweet!