How practical is it to take a Collectivo to Xel'Ha park?

Between Playa Del Carmen and Tulum, a "Colectivo" service runs up and down the main highway. These are vehicles you can flag down and pay a small fee to drop you off at some later point along the road.
I'm interested in using a Colective service to get to the Xel'ha lagoon/theme park. My question is how well does this work - our experience so far has been that some attractions are right off the highway, making colectivo ideal. Some are off the highway but with a transport service (like Xcaret theme park) and some are a considerable walk off the highway, which normally wouldn't be an issue - but is proving one in August heat and humidity to those accustomed to northerly climates.
So the question is how well does using the colectivo work for visitng this attraction - especially as Xel'ha appears to be located at/off a major road junction.
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What should I wear to Xel-Ha Park?
If you are looking at what to bring to Xel-H\xe1, we recommend you to wear a swimsuit, sunglasses, a hat or cap. Pack an extra change of clothes, chemical-free sunblock, and comfortable shoes or water shoes, and remember to bring cash or credit card for an Optional Activity, photographs, or a souvenir.Does Xel-Há provide towels?
we provide towels at Xel-Ha. There is no need for you to bring.Does Xel-Há have monkeys?
#7 \u2013 Xcaret Eco Theme Park You can go on snorkelling tours through underground rivers and swim with dolphins. There are two other main sections to Xcaret (X Plor and Xel-Ha) which I will talk more about below. They also have macaws, monkeys, deer and other wildlife. Plus so much more.What does Xel-Há include?
Unlimited snorkeling in the inlet with the use of snorkeling gear and a free snorkel. River floating on inner tubes. Scenic Lighthouse with 360\xb0 views from a height of 131 ft (40 m) and a fun descent. Continental breakfast from 9:30 a.m. to 11:30 a.m.TIPS PARA XEL-HÁ | APROVÉCHALO AL MÁXIMO
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Images: Gustavo Fring, Gustavo Fring, Yaroslav Shuraev, Yaroslav Shuraev