The Issue:

Waiting to add 20 or 50 people can be frustrating if we have to add them 1 by 1 via the plus and minus sign.

The Idea:

Please give our customers a more efficient way to quickly add the number of persons they wish to book for their trip.

Maybe a space to type the number, or as the "More Options" section in the booking form; numbers can already be populated for our customers to choose.