I like the one week too or at most spread over two weeks with some full days the second week. Mostly it gives me a chance to deal with different parts of the child's day and work out my own routine. I always have them come as if they were going to work so get up in the morning, do normal routine and then bring child to daycare - and at least one of those days continue on to work so they can see how the route has changed and get their timings down. It helps us all to see if child will need a different time for morning nap than mom has been doing (since child was sleeping in) etc. We do a mom and baby first day, mom for 15 mintues and baby for an hour Tues, baby alone till after nap but befor lunch (baby experiences sleeping at my house), Thursday child stays for lunch but goes home before nap (baby experiences a meal at my house and me feeding them), Friday they come all day - mom has one last day to do errands and get house ready for return to work but suggest they pick up by 3:45 so child is first to go home not last. They start care the following week and mom goes to work. For pay I do a pro rated schedule with hourly/ half day no meal, half day with meal, full day. so over the course of the week they basically pay for the equivalent of 2-3 days.