Idiom:
Like there's no tomorrow ( go crazy )

Hit the book:
PREPARATION:
Once all your plans have been made it's time to start preparing. The first thing you should prepare for is safety. Make sure you have at least one amply stocked first aid kit. Some things to include in your kit:
Bandages
Gloves
Gauze
Tissues
Baby wipes/moist towelettes
Info cards for each child. These cards should have a list of the child's emergency contacts, allergies, medications, etc.
Master list of names of the students and parents on the trip as well as any cell numbers that may be needed.