how much bait to bring along for a days fishing
Hardly any for me this time of year. Depends what you're going to fish with.
Personally i'd be happy with half a pint or so of small micro carp pellets ( 2mm), plus handfull of expanders say, 6mm, 4mm, 3mm for hookbait.
But you could use anything else you wish, maggots, sweetcorn, worms etc.
Just not much of it. It's cold, fishes metabolism slows down etc.
One thing I did notice there, after it had been colder than this admittedly, was the fish can shoal up, quite a few on one peg, not much on others. Should be ok now though.
'Shallowman' on MD's ( don't know if allowed to mention other sites) could advise you much better than myself and i'm sure would be helpful.