The assault on a bank, two hotels and a police station was the latest in a string of attacks that have damaged Kenya's tourism business, a key source of foreign exchange.
The attack near the village of Mpeketoni, is close to the popular Kenyan hotspot Lamu, 211 miles northeast of Mombasa.
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The Oscars was plunged into chaos as La La land was mistakenly announced as the best picture, the actual winner was Moonlight.
The tourists had no idea they were about to be dropped off at the star-studded ceremony to meet A-listers.
It comes just weeks after actor Michael Keaton confused the names of films Hidden Figures and Fences at the Golden Globes.