Fill in the gaps with the correct preposition. 1. Our family spent a few days ___ the seaside. 2. There are many boats _____ hire at Yalta. 3. Hotels offer special rates if you travel ___ season. 4. You should book your tickets at least a month ___ advance. 5. For safety reasons, you should know rules for using mobile devices ____ board. 6. Please send me information _______ delay.