Most people come to Jalcomulco for the nature and active adventure sports. The primary choice is rafting down any one of the many rivers, but most will come down the Pescador River.
There are several outfitters in town to choose from. It is best to make reservations in advance since there are limitations on group sizes and most outfitters only have 1~2 times per day. Departure times for example are typically 9am and 11am. The rafting takes about 90 minutes.
The outfitter will provide transportation to the top of the river, the raft, life vest, everything. All that you need to bring are clothes and foot wear that are suitable to get wet. During the day, the sun on the river can be quite strong, so it is recommended to wear thick waterproof sun block.
Outfitters will vary in prices, but will offer between 400~700 MX per person. The contact details below are for the Rio Aventura Expedictions. They offer 400 MX per person. Also, they offer rappelling, zip-lines, etc. Payment is either by cash or PayPal.
I could have easily put this entry under the title of "Local Customs", but since it is dual purpose, I'll let it stand here as a restaurant review.
Again, talking to locals, they all pointed us to Los Cachanes as the best place to taste the local delicacy, the camarones de rio (river shrimp).
The service of the restaurant is not the best, we sometimes had to actively flag and wait for the servers to come back, but I guess that's to be expected in a small town that does not have many passersby.
They have plastic chairs and tables on the patio immediately up the bank from the river. If you want, they also have some tables inside. Either way, the mosquitoes can be bad if there has recently been rain. Also, I'd suggest pants if sitting in the patio so the sand fleas don't bother your legs.
Favorite Dish: The camarones de rio are the reason to come here. Be careful and be quite clear when you are ordering that you want the from the "rio", other restaurants may give you standard frozen salt water shrimps.
The river shrimp are much larger and have a distinctive flavor. They are sold by 1/4, 1/2 or 1kg portions. They have a lot of sauces to choose from and will gladly split the portions into a couple different sauces. I personally would recommend the "enchipotlados"
Having asked some of the locals and a few policemen, several of them all pointed to Taqueria Vero as a good place for 'comida economica', otherwise known as simple good and cheap local food.
The ladies (I assume all part of the same family) who run the place are quite nice and pleasant to talk to. Be polite and they will more than return the favor.
The place is definitely a no-frills type restaurant, but the price is cheap. Including a couple beers, we paid 70 pesos for our entire lunch for two people.
Favorite Dish: They serve small tacos, quesadilla, tortas and more. They even had a couple things that my Mexican friend from Cancun had never heard of, so we tried them all. We were quite pleased and full when we left.
Jalcomulco is a relatively quiet town, but the people here do enjoy the evenings. They mostly congregate to the one street closest to the river. On this road there are a couple bars that play dance music and a few that are more relaxed for sitting and talking.
However many of the locals who befriended us said they typically just buy some beers in the convenience stores and drink in the streets.
Dress Code: Dress code is completely casual. The night starts around 9pm and goes late on the weekends.
The town itself is quite safe to walk at all hours of the night. The only real problem or warning I can think of while visiting Jalcomulco is in regards to money.
It is wise to stop before you get to Jalcomulco and get cash. There are no banks in Jalcomulco, no ATM's, etc. Also few places accept credit card, so it is a cash-only town.
oh, an after thought : look at my restaurant tip for the camarones de rio. That's the only other warning. Some restaurants may not clearly state if they do or do not have them.