Vacay with kids, literally more bags. Adding swimming board, float, google, water gun, toys, towel (the never-ending list) will make your luggage overwhelm.
Parents Secret:
Look for compact foam swim vest that easily folds into like-a-book size. So you only have 1 safety swim vest to pack along. Rest assured, you can leave other float or swim aid behind.
Now much for 2 vest, 8years old & 3 years old