Hi K.,
I can completely relate. My daughter turns 2 on 9/15 and we've experienced a lot of the same so you are not alone. I do have a few suggestions for you. We moved my daughter into a toddler bed after she fell out of her crib before 18 months. When we did this, we also removed the door from her bedroom and installed a gate instead. The only time we use the gate is when she is sleeping. This will prevent her walking into your room at all hours of the night. We've also placed some of her favorite little toys and books on a small corner of her bed. Our toddler bed is a conversion from her crib so it worked to do this. When she wakes up at night, and is more awake, she can just play with these items and eventually, she'll go back to sleep. We also put one of those little glow bugs in her bed to help her get to sleep or feel secure when she is sleeping and wakes up - and use as a cue to go to sleep. We took the night light out of her room because we found that when her room has light, she wants to stay awake. She, like your daughter, doesn't want to miss out on anything and prefers to go to sleep at 10:30 - 11:00. I noticed this trend, however, when the days were getting longer. So, I would darken her window with heavier curtains/towels so she would go to sleep a little earlier. Now that the days are getting shorter, she's going to bed earlier... 8:30 - 9:30 timeline. And, at daycare they are scaling back on her naps/duration of the naps. This is actually helping but you have to monitor what works best. If she doesn't get a nap at all, she's asleep by 6. If she takes a shorter nap, she's asleep between 8:30 - 9:00. Which, from our side, is a much better time than 10:30 - 11:00.
Not sure if I have helped or hindered but I hope that this will at least give you peace of mind in the fact that you are not alone on this one. It's been a constant battle for us and we've found some trends and go with them. Each day is different. Sometimes she doesn't want to put her p.j.'s on because she knows that we're winding down to sleep and she just wants to continue to play.
Let me know how this works out and if any of these suggestions work for you if you do indeed try them. If you have something else that works, please share it.
Take care,
K.