In all seriousness, relax and enjoy your summer. The program is intense, so downtime is somewhat limited. If you want to 'work ahead", consider working on medical terminology
(if you haven't had a course in it). I don't know about your finances, but some members of our class worked to get some money to help them through the rest of the program prior to starting.
Make sure you get all of your paperwork (clearances, physical, insurance, etc.) turned in on time. Be prepared to order uniforms at orientation. You will also need a stethoscope and white shoes (sneakers are fine). (You will need to purchase a lab bag from the school - it has a pair of scissors and a penlight in it.)
Do you have any specific questions I can answer? Let me know!
Oh, do you have a date for summer orientation yet? Thanks!