Pipelining is key for hitting the ground running, particularly for a short stay.
In addition, to the local girls on Latin American Cupid, there is a solid representation of women from Venezuela, Costa Rica, and Colombia. Veneto Casino is filled with hookers at night from Colombia.
Pimsleur is the best resource I’ve come across for learning Spanish.
Within a few weeks, you will be able to open girls in their native tongue.
I wouldn’t recommend Panama City as a destination solely for women.