A correct sample vacation day itinerary is as follows:
7am: Wake-up/mini-vacation one
One parent gets the child and perhaps walks them to a nearby bakery for breakfast foodstuffs and coffee while other parent sleeps in and/or works out and/or streams Stranger Things on an iPad.
8:30am: Breakfast with everyone together!
Love is in the air, because one of you got to watch Stranger Things and the other brought back bear claws.
9:30am-12:30pm: The day activity
This is a group activity involving everyone, so just try and get through it -- er, have fun! Also, eat lunch. Involve grilled cheese.
1-3pm: Nap time/parental hang
It is not fair for the other parent to use nap time as their mini-vacation alone, so you guys should spend time together doing relaxing vacation things and complimenting each other's hair.
3-4:30pm: Mini-vacation two
One parent gets the child up from the nap and goes for a walk, or shows them how to ride a horse, or explains the concept of the "potty." The other parent who didn't go on vacation in the morning gets to spend 90 minutes doing whatever the hell they want.
If you go out, dinnertime can also be broken into some mini-vacations, in which one of the parents walks around with the child while the other drinks wine at an alarming rate. If your child will sit respectfully while you and your husband/wife discuss the events of the day, congratulations, you are the one couple for whom that annoying book about raising your kid like the French actually worked.
7-8pm: Child sleep prep
I have no idea how you put your child to sleep, as everyone seems to have a different routine, but incorporating that Sesame Street episode where Elmo and Abby have a sleepover isn't a horrible idea.
8pm-Bedtime: Parental hang two
Now you can do whatever you want! Watch more Stranger Things! Drink more wine! Put on that movie where the Farmers Insurance commercial guy is a really angry band leader! Either way, you've just had a somewhat relaxing vacation-like day!