I went in yesterday after booking online. I highly recommend booking online as it made the process so much easier, you can do so through their main website. You can enter in exactly when and what you want, select specific stylists and there's no room for miscommunication. You get a confirmation email and you have the option of receiving a text reminder as well!
The experience was also good, my hairdresser spent a lot of attention to detail and asked me questions along the way. She explained to me what she was doing most of the time and I imagine this would help people with anxiety. The hair wash was also great, they take their time and do a lot of scalp massages.
Finally, you can tip through the machine, which is definitely a plus since a lot of salons I've been to do cash only tips.