yes, i can see cruise ship tourists sitting in the 100 degree sun, watching a performance by some bachata band. yeah. sure.
tourists will go where tour operators take them. maybe amphitheater visit makes it into puerto plata city tour or something. obviously cruise ship passengers cannot stay long due to time limitations and won't participate in events that take place in the afternoons/evenings.
In other words, their chances of seeing a performance there will be about zero.