Your passport must be valid for at least 6 months after you arrive.
Onward travel
Not required.
Proof of funds
Not required.
Pre arrival registration
Evidence of yellow fever vaccination required for all travelers.
Overstay penalty
Check with the embassy for overstay penalties.No overstay penalty figure was found against any source checked in this research, kept honest about that gap.
Currency limits
Declare cash above No single confirmed cash declaration threshold was found against a primary government source in this research..
Extension
Extensions are not available for this stay.
Also worth knowing
Citizens of any nationality traveling on a tourist charter flight get a distinct visa-free allowance per the source, not modeled per passport country since it depends on trip type.
Reminder
Always confirm with the official embassy or consulate before you fly.