I tried sending you a private message, but you don't have the prerequisite number of postings to receive them. I haven't been to Caleta since 2014, but it was a small, enjoyable location with locals. A one road in, one road out type of place. Not many tourists. Come to thing of it, when I was there, I may have been the only non-Dominican. It's also more of a weekend spot, as of course, most are working on weekdays. There were several shoreline "Plate of the Day" and fried fish locations. At the end of the path was a bar with several pool tables, music, and a few waitresses. This place resembles the location in the video provided, but again you would only see that on a weekend. Also, as I remember they close things down in Caleta at around 6 or 7pm.
I believe the previous post by Salsafan is 100% spot on. Bayahibe village would be a more enjoyable location for you, especially for the day and time you will be there. It's more in line with what I recommended above. Almost all of my favorite moments over the years in DR have occurred in smaller locations such as colmados, cafeterias, and small restaurants
So, all in all, I'm with Salsafan, but remember....don't buy sunglasses in Bayahibe.