Do feel free to fall asleep. Listening to gentle music is fine. If absolutely necessary, getting up slowly to use the toilet or get a drink of water is fine but go back to resting immediately after.
Don't go out and about while your booked session is taking place. No alcohol etc on session day and ideally not the day before nor the day after. During the session, please no reading or watching screens, listening to podcasts or any other distractions other than gentle music or silence.
If you do happen to go out and about whilst booked into a session for whatever reason, the Divine Cosmic Energy will place you into a gorgeous cocoon of love, peace and protection but you will not receive any other energetics. This is for your wellbeing while you are on the move and overall (individual or group) harmony.
Rest post session to let the powerful energetics assimilate and feel free to drift off to sleep anytime. If you are going to listen, read or watch anything, avoid all negativity in the content. Avoid engaging in conversation post session as well, especially banal or negative conversation.