I believe taxes are included. The 8 Peso pp is standard and is for place setup. Marc, the boardwalk is entirely safe to walk at night. It's a former shipping warehouse area on the river that's been converted to a trendy area with lots of restaurants, nite clubs and shops. It's clean and well lit and an enjoyable walk after dinner. If you get there around 7 to 8 pm you can get right in because locals don't go out to eat until 10pm or later.
Jim