I recently got back from Las Vegas for my first Microsoft Inspire event. I took a wash-up video each day and posted them on Twitter. I've added them here as a nice single place to find them all.
I signed up to attend the pre-day on the Sunday - this was a great opt-in benefit I suggest you sign up for if you can in the future.
Day 1 - my day revolved around Skype to Teams roadmaps and Azure
Day 2 - I spent a lot of time on GDPR functionality enhancements in Office 365
Day 3 - A great final day, with a fantastic keynote. I doubled down on Azure incentives for SQL and Windows server migrations to Azure.