Nope, 11 hours is way too long for me. Parents forget sometimes that we don't get coffee breaks or lunch breaks, sometimes not even bathroom breaks! :P
When I first opened, I was kind of railroaded into taking a child half an hour earlier than I officially opened. I said sure, and didn't even charge extra (how nice was I? lol)
These same parents then showed up late consistently, rarely paid fees on time, and so on. I am not saying that all parents who ask you for a break in some way are like that, but it is a warning sign for me. I could not wait for this family to leave!
Many parents in my area arrange for mom to drop off and dad to pick up, or something like that. Why would you WANT your child in care for so long, anyway? Ugh. I couldn't stomach that idea. Hey, I think I am a great provider, but I wouldn't want my kids under someone else's care for that length of time everyday!! Not to mention, what happens in the dead of winter? When mom's commute takes twice as long due to weather? That means a 12 or more hour day for you!! NO WAY.