ds2 was in night nappies until last summer, at 7yrs. He was wearing Holden's Landing toddler bedbugs, Zany Zebra XL pocket fitteds and had custom made LLS, Little Gumnut and Hollow Oaks. We used wool over fitteds and he had to have natural fabrics in the nappy as his skin got sensitive to the urine, probably because it was just overnight and not during the day iykwim.
We tried a few times without nappies, you do need to try for a few nights in a row I think, so they get used to the idea. We didn't lift as I think that teaches them nothing. We used waterproof mattress pads from Brolly Sheets, as they were longer than those we had from Wee Notions (which are lovely, but too short for a 7yr old, we found) and went for it over the summer.