ISR recommends no dairy for 3-4 hrs before a lesson and 1.5-2 hrs with limited food & drink before a lesson.
Nap times are important
Your child will have the same lesson time daily
Planned vacations: only 1 allowed; I MUST know before you schedule lessons or you will be charged. During peak times I always have students waiting to get into lessons and I want to make as many students possible safer around water.