Make a day of it
Definition 1 of 1
Pro Tip 1/3Leisure Context
Often used when planning a leisure activity that's worth spending a full day enjoying. 
The weather is perfect for the beach; let's make a day of it.
Pro Tip 2/3Shared Experience
Implies shared involvement in an activity, creating a bond or memorable experience with others. 
We haven't seen each other in ages; let's make a day of it at the mall.
Pro Tip 3/3Full Commitment
Shows determination to engage fully in an activity, without rushing or skipping parts of the experience. 
This museum has so much to see, we should make a day of it to take it all in.