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This study develops a spare regression model, based on the LASSO method, to select an efficient subset of determinants of visitor expenditure across five annual events taking place in Madeira, Portugal. The results indicate that event attendees\u2019 income, length of stay and travel party size are significant determinants of total expenditure across all the events. Adopting strategic measures to influence these variables, if duly implemented at the portfolio level, can enable the cross-leveraging of additional expenditure that would be inaccessible to the destination if the Events were acting independently of one another. 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