It's actually Rommy.
Of course Vegas Bob would be your best resource on this subject but I'll add what I can.
It's been 6 months since I've played rommy but as I recall the main differences between rommy and blackjack are:
1. BJ pays even money.
2. The player gets paid 3 to 1 for 3 of a kind or a 3-card straight.
3. The surrender rules are a little more broad with rommy (like down to 14 against an Ace).
The table stakes vary from 1000 colones ($2.20) or $5 on up. If you buy in with dollars you get dollars when you cash out. Same for colones.
No rules here but some info.
http://www.wagerlover.com/casinos-in-costarica.htm
http://www.ildado.com/land_casinos_costa_rica.html
Notes to Money:
When the dealer gets his/her 2nd card makes no difference. The cards are shuffled and come out random.
"Taking hits for the team"?
Whether you're using Basic Strategy, card counting or just blind luck you play your hand they way it needs to be played. It ain't a team sport unless you're using a counter and a Big Player.