Not at all. Mardi MAY classes are designed with beginners in mind. First time and experienced meditators are welcome to attend any of the classes at anytime. For meditators that are more experienced Mardi MAY also offers a meditation study group recommended for people that have been attending classes regularly for some time – or that wish to go deeper into study. Please contact her for more info.
For more info you can also read the blog: Meditation Practice Guidelines here