If the name is allowed by the registry, if you're eligible to register it (e.g. nationality requirements) and if you can afford it, then why not.
But, if this is still available, ask yourself- why has nobody else already got it?
(It is usually one of the first taken when a ccTLD opens for registrations).
Just out of interest is this at the second level, e.g. casino.sm, or the third e.g. casino.am.br?