My mistake was to purchase a ticket on the Ultramar ferry from viator. Upon arrival at the Ultramar office to exchange my voucher for a ticket to Isla Mujeres, the staff could not find my reservation. After 15 minutes of searching, I gave up, and purchased a ticket right there. I lost the money I had paid for a voucher, but gained knowledge in the future, to pay on the spot.

I purchased round trip tickets through Viator which turned out to be useless vouchers when I tried to take the ferry. I had to purchase new round trip tickets at the counter. That's how great my experience with Viator was

There isn't much to review about this trip. It was a simple ferry ride from the mainland to the Island. It was a nice, warm, sunny day that made for a pleasant ride. We rode both ways on the upper deck to take advantage of the beautiful weather.
The seating area that we were in was nice and clean. The seats were as comfortable as you could expect for a ferry.
A couple things that stood out in my mind:
Once we got up to full speed, there was quite a bit of wind to deal with so keeping your hat on or your hair in place was a struggle... something to think about before electing to ride on the upper level.
On the way back, there was a singermusician playing a guitar and singing songs and taking requests. It was a nice touch to accentuate our trip back to the mainland. We never knew if he was an employee of the ferry, or just another passenger who was performing for tips... we tipped him a few bucks.

I can't think of anything about the ride, either way, that I was disappointed or upset with. From what I can remember, the price wasn't anything outrageous.

Not cool! Overpaid by 15 USD per person. Paid 23.98 roundtrip per person. When we went to exchange our vouchers for tickets, the price listed on the actual tickets was 146 pesos8.71 USD. I suggest you buy your tickets at Puerto Juarez. No need to worry about them running out as they have multiple boats every half hour.

We did not get the trip we purchased. Your offices were closed by the time 9:30 we arrived at Puerto Juarez. We ended up having to purchase tickets with another company. I was not pleased at you stranding us.

Tour was good.

Islas Mujeres is too commercialized for my preferences. Ferry trip was fine.

The ferry ride was great however a shuttle service should be included from hotel to Puerta Juarez due to it being away from everything else. Not an easy transportation arrangement. After being frustrated with not being able to ride bus there and time wasted we finally took a taxi.