I perceive the answer to this question to be a resounding YES. However, I have a story to tell. My mother, who always does seva whenever she goes to Gurdwara, was attending a Rainsabai Keertan and was told by an Amritdhari Sikh women that she could not do the Seva of making rotis, just as she was preparing the flour for making them. The Amritdhari women told my mother that she could not do the seva of making rotis because she(my mother) was not an Amritdhari. My mother was offended, though did not say anything at the time. She took Amrit when she was in college, but is not currently an Amritdhari, though still does Nitnem and recites her banis everyday. What is your opinion of this? Is it not wrong for Amritdhari Sikhs to go about criticizing non-Amritdharis and preventing them from doing seva?