While tourist area stores, banks and businesses will remain open on holidays, take note of the Dominican holiday schedule for 2007: Monday, 1 January, New Year’s Day; Saturday, 6 January Epiphany Day; Sunday, 21 January, Day of Our Lady of Altagracia; Friday, 26 January, Duarte Day; Monday, 27 February, Independence Day; Friday, 6 April, Good Friday; Monday, April 30, Labor Day; Thursday, 7 June, Corpus Christi Day; Monday, 20 August, Restoration Day; Monday, 24 September, Day of Our Lady of Mercedes; Monday, 6 November, Constitution Day; Monday, 25 December, Christmas Day.
For more on holidays in the DR (2007 and 2006), see http://dr1.com/travel/prepare/holidays.shtml