Is Playa del Carmen and Majahual safe

The bus from Cancun to Playa is no issue. I have never been to Manahaul so I cant speak specifically to that bus or location. I can say however that at least on the buses (the local collectivo's) I have taken there you best know where you need to get off. If no one speaks up or if no one is at the bus stop waiting to get on they don't stop. They don't really announce what the stop is or that you are coming up to a stop for "x" location. Again that is my experience on the "collectivo" in and around Playa heading north towards Cancun or heading south to Tulum etc. If it is more like a greyhound bus it may be different. In that area my only fear has been getting lost, wrong stop etc and not knowing the language well enough to be able to effectively communicate my dilemma, which is entirely on me.