Further question RE dumping and reloading whole database server

Further to an earlier question..

I've tried

pg_dumpall --inserts --clean -h $REMOTE -U admin | psql -U postgres
template1

To extract a whole database from a remote server and to reload it into a
local DB but this produces tons of errors.

ERROR: role "admin" cannot be dropped because some objects depend on it
DETAIL: owner of database test1
owner of database test
7 objects in database test1
201 objects in database test
ERROR: role "admin" already exists
ERROR: current user cannot be dropped
ERROR: role "postgres" already exists
ERROR: role "sql-ledger" cannot be dropped because some objects depend on it
DETAIL: owner of database bean-demo
owner of database bean-cash
owner of database bean-41

Is there something I need to do RE the user I connect as?

Or should I do the dump to a file - transfer the file and then attempt
the reload?

Thanks,

bailey86