Hi Olivia,
Hotels are stored at the account level. Anytime you make an edit or update to a hotel within an event, the hotel's details will change in Admin, and any event that the hotel has been associated to. When adding hotels or making changes to hotels in events, you should not simply edit the name of the hotel. Always make sure you're creating a new hotel by either creating one completely from scratch, or using a hotel from the Cvent Supplier Network.
You can see which hotels already exist in your account by going to Admin, click Events, then Hotels.
Why are my hotels changing across all of my events?
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Julia Plymack
Senior Customer Success Manager
Cvent
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