Unless damage is severe, you can probably clean, reglue and refinish antiques at home. Extensive repair or re-veneering work should be done at a reliable furniture repair shop. Solid wood furniture can usually be restored, unless damage is severe. You will probably need to clean, dry and reglue the piece. Slightly warped boards may be removed and straightened.
Wood veneered furniture is available in many qualities.
Extensive damage may be costly to repair. If veneer is loose in just a few places, you may be able to repair it. Upholstered furniture may be salvageable, depending on its general condition. Flooded pieces will need to be cleaned and dried, and mildew should be removed. If damage is extensive, you may have to replace padding and upholstery.