My kids went to bed at 7:30 up until last summer, then we got lax about it. Summer's so laid-back and it wasn't a big deal if they slept in the next day, so why not let them stay up until 8? Or 8:15? Or even sometimes 8:30? It's not like we usually had to be somewhere right away in the morning. It just didn't seem like a big deal, and it really wasn't a problem.
I often had Bradley students ask "Your kids are already getting ready for bed?" when Jason would bring them upstairs at 6:30 or 6:45. Yep. It takes them for-freaking-ever to get ready for bed, especially if it's bath night. Bath night usually consists of:
1. Bath for 20 minutes or so, depending on the level of splashing and the amount of whining done about washing hair and bodies.
2. Lotion--Kamu year-round (twice a day in the winter), Patrick in the winter.
3. Hair oil and combing--Kamu, only if his hair has been washed
5. Jammies--this can take a while, since the kids like to run around nekkid.
6. Brushing teeth--conversely, we have to insist that this take longer than the kids would otherwise do, though they don't mind brushing. When they rush through, I often take over brushing for them. They get to choose the language in which I count to ten (English, Spanish, French, Italian, Hebrew, and working on Amharic) and I count at a reasonable rate to get them brushed properly.
7. Story/stories--depending on what time it is, the general level of cooperation in the bedtime routine, and the length of the story chosen. Normally each kid gets to pick one book (or chapter of a book, in Patrick's case).