The Pavilion Car Park is pay and display. Pavilion and Westover Gardens charges (BH1 2BU) at the time of publishing are — Up to 1 hour – £2.00; up to 2 hours – £3.50; up to 3 hours – £5.00; up to 4 hours – £6.50; up to 5 hours – £7.50; up to 24 hours – £15.00; overnight from 11pm to 8am – £2.00
Central Car Park Charges – Upper Hinton Road (BH1 2HH) – at the time of publishing the Central Car Park in Upper Hinton Road  costs £4 for up to 24 hours.  This is only about 5 minutes walk away from the Pavilion — Up to 1 hour – £1.00; up to 2 hours – £1.50; up to 4 hours – £3.50; up to 24 hours – £4.00; overnight from 6pm- 8am – £2.00

You can find full details of charges and location of various local car parks at http://www.bournemouth.gov.uk/Parking/FindaCarPark/FindaCarPark.aspx