Many businesses open earlier and stay open later. Bolivia is four hours behind Greenwich Mean Time. Bolivia uses the standard 220 volts at 50 cycles. Be sure to ask before you plug in. If in doubt assume its 220 and use a converter, but be sure that it is for the intented purpose and the correct electrical appliance.
All departments have their proper holiday as well.
The Embassies and consulates in foreign countries also have tourist information about Bolivia. They are located in La Paz and other major cities. There are plenty of car rental agencies in all major cities across the country. The prices tend to be steep because of the high cost of vehicles, service, spare parts and the unpredictable and rugged roads of the country. You need a passport, international drivers licence or valid driver's licence, and a major credit card.