I have done the cleaning,(no drying
),loading,fuelling and other tasks.
What you need to know is unless you are really passionate about becoming a pilot,please dont.
You have more chance,in general,to end up jobless and in debt than flying for a major airline.
The only reason why my morale is not all the way down to my fancy airline socks is that i am still enjoying the flying.
The day that goes away, i will give up the gloves.
Good luck.