BMQ Inquiry: Prescription, Skin Care, Training, Etc.

[Shadow_]

Hello Soldiers, Seamen, & Airmen,

I salute you all for protecting our land and defending our sovereignty.

I am an aspiring civilian hoping to become a part of The Force. To better prepare myself, I have a few questions before signing up. Your responses will be greatly appreciated. Thank you in advance!

1. I am using a prescription topical cream for my skin at night. Will I be able to bring it into BMQ and use it? Can I also bring and use my skincare products (face wash, moisturizer, sunscreen)?
2. Am I allowed to bring and use vitamins and supplements in BMQ, such as vitamins, mineral supplements, fish oil, etc.?
3. How about workout supplements like pre-workout and protein shakes?
4. If I am driving to the BMQ training location, will I be able to check and start my car's engine at least once a week? Cars can get battery drained or stuck in place if not moved for a long period of time.
5. Rucking: I want to start training for rucking. What is the average/usual weight of the rucksack (the bag plus the items inside it)?

I appreciate your responses and have an awesome day ahead!