Am i allowed to visit Utopia, mine, gather resources etc. then use the vault to transfer my stuff to SMP1?
if you are not a gold or diamond supporter you can't access the wilderness on utopia, you can visit utopia town though.
Correct But if you were a Gold supporter you could do this. Also you can mine on any smp server and use the vault to transfer it back to smp1, that is the purpose of it