2, there is no holiday, but you can discuss with your boss when signing the contract and ask him to give you a day or two off a month. Don't think about once a week, it's impossible.
3, novices don't ask too much, just do it when the salary is satisfactory. Learning experience is very important. Generally speaking, the first employment unit of a novice usually needs to be changed within two years.
1, activity is photography.
Ask more details when talking with the boss about the salary.