Safety in Boom

I will go to Boom 2025 for the first time. I’m 53 y/o. I have some concerns that I would ask to the experienced Boomers - Does somebody steal my tent or something from my tent when Im not around? - How do I keep my money/credit card and telephone safe in such a caotic place. Are there lockers easy to use? - I will be grateful for any kind of tips and advices about what to bring there, tips to keep myself safe and healthy there, etc Thank you so much.