I am hoping to have my ceremony start at 11 am. I know this means a tight morning for my maids and me but is it okay to ask guests to arrive by this time? We are getting married in a field at a public park and the reception is lunch at a private barn. We will have a dj and full served meal. The reason for the time preference is there is a cruise on a local lake that we wanted to catch with our guests as a post-reception event. What are your thoughts on the time?