Open Buraco and Royal Buraco have similar rules.
The difference is that in Open Buraco, jokers are in the deck.

To Recap...
Discard pile is Open
Buraco 500 and 1000 points allowed
Clean Buraco necessary for closing
Triplets are NOT allowed
Jokers are in the deck and their value is 50 points (not 30 as in Italian Buraco)