ALTER TABLE `#__sr_experiences` ADD COLUMN `tax_id` INT(10) UNSIGNED NULL AFTER `code`,
  ADD CONSTRAINT `fk_sr_experiences_sr_taxes1`
  FOREIGN KEY (`tax_id` )
  REFERENCES `#__sr_taxes` (`id` )
  ON DELETE NO ACTION
  ON UPDATE NO ACTION
, ADD INDEX `fk_sr_experiences_sr_taxes1_idx` (`tax_id` ASC);

ALTER TABLE `#__sr_experience_reservations` ADD COLUMN `summary` TEXT NULL AFTER `participants`;