Thanks to a girls trip, I discovered a new life changing app, Tricount. This app helps organize the expenses for all the different people involved. For example, this past weekend, instead of four people constantly splitting the bill, we just rotated who paid what and put it in the app. At the end of the trip, it calculated who owed what to whom. It was also very helpful as different people were present for different portions of the expenses, and this helped keep track of it all.
Tricount does all the calculations for you in order to make traveling together real easy! Highly highly recommend this app to help split costs with groups in different situations.