
Book in
Pre-travel Action
 Used when securing a spot before arriving, like for hotels or events. 
Make sure to book in for the concert soon; tickets are selling fast!
 Advance Planning
 Reflects the need to plan ahead for accommodations or attendance. 
We booked in at the resort months ago to avoid the holiday rush.
 Confirmation Importance
 Highlights the certainty of having a reservation. 
After we booked in, they sent a confirmation email with all the details.