Nappies for bed

I think Little Gumnut All Hours are the best. And I'd put a pair of Disana merino shorts over the top.

I use Weenotions Night Notions (WNNN), Holdens Landing Bedbug plus, and little Gumnut all-hours.
Although that's a long sleep your lo isn't taking in fluid during that time so isn't likely to wee anymore than a 10 hour sleeper who wakes for milk in the night.

We use wool covers over the nappies as they allow moisture to evaporate so the nappy can take on more during the course of the night.

My lo has outgrown her medium wnnn, and I couldn't afford to get a new one, so I have been putting a petit dessous insert in a meos, underneath the stay-dry booster, with wool soakers over the top, and I have found that this combo works great!

For us, we use 2 large bamboo flats, with a bamboo booster and really dense wool shorts, and it does at least 12 hrs and is usually only 3/4 wet. They are also cheap, and dry fast. You can get 6 for about £20 sometimes, which would do 3 nights.