2. The exemption contained in this notification shall apply subject to the following
conditions, namely:-
(i) the provider of taxable service has the option not to avail the exemption contained in this notification and pay service tax on the taxable services provided by him and such option, once exercised in a financial year, shall not be withdrawn during the remaining part of such financial year;
(ii) the provider of taxable service shall not avail the CENVAT credit of service tax paid on any input services, under rule 3 or rule 13 of the CENVAT Credit Rules, 2004 (herein after referred to as the said rules), used for providing the said taxable service, for which exemption from payment of service tax under this notification is availed of;
(iii) the provider of taxable service shall not avail the CENVAT credit under rule 3 of the said rules, on capital goods received in the premises of provider of such taxable service during the period in which the service provider avails exemption from payment of service tax under this notification;
(iv) the provider of taxable service shall avail the CENVAT credit only on such inputs or input services received, on or after the date on which the service provider starts paying service tax, and used for the provision of taxable services for which service tax is payable;
(v) the provider of taxable service who starts availing exemption under this notification shall be required to pay an amount equivalent to the CENVAT credit taken by him, if any, in respect of such inputs lying in stock or in process on the date on which the provider of taxable service starts availing exemption under this notification;
(vi) the balance of CENVAT credit lying unutilised in the account of the taxable service provider after deducting the amount referred to in sub-paragraph (v), if any, shall not be utilised in terms of provision under sub-rule (4) of rule 3 of the said rules and shall lapse on the day such service provider starts availing the exemption under this notification;
(vii) where a taxable service provider provides one or more taxable services from one or more premises, the exemption under this notification shall apply to the aggregate value of all such taxable services and from all such premises and not separately for each premises or each services; and
(viii) the aggregate value of taxable services rendered by a provider of taxable service from one or more premises, does not exceed rupees *ten lakhs in the preceding financial year.
https://www.servicetax.gov.in/st-profiles/event-mgmt.htm