I have a three year old dd and a three year old dsd
So I can tell you two different ways.
My dd: EX and I live 5 minutes apart (I bought in a different neighborhood, but close to him so the kids would not be far from school friends at either house)
We have a 50/50 split during the school year. Ex has every monday/Tuesday, I have every Wed/Thurs, we alternate Fri afterschool through Monday before school. It works out to a 5/5/2/2 rotation. I really like it (as much as you can like a 50/50 split) better than a week on/week off because I can sign them up for afterschool activities on Wed or Thurs and not have to have them miss class eow or have to ask ex if he will agree to take them, it is also nice to only have 5 days apart instead of 7.
Summer: I am a teacher, ex is an elem. principal. We basically keep everything the same, however, I have off from 2nd week of June-4th week of August, he is only off for July. So in June and August, on his days, he drops the kids to me when he works and picks them up after work. It is great because it means no day-care for them and I only miss eo Sat/Sun with them for those two months
My dsd: DH allowed his ex to move 1 1/4 hours away to be closer to a support system (yes, allowed, as the courts had said she had to remain in a surrounding county and he had to sign to allow her to move further) mistakingly believing that this concession would cause her to be nicer to him. They have Shared Parenting, just as my ex and I do, but because of the distance a 50/50 split does not work. one week we have dsd from 8:00 am Thursday-2:30 pm Friday (we own our chiropractic office so we have it closed on Thursdays for dh to spend the day with Maidson, Fri she goes to a sitter from 8-1, we close the office from 1-4 for Matt to take her to her mom's) the next week we have her from 8:00 Thursday morning until 6:00 Sunday evening.