@Prashanth @Madhusudhan will be writing a blog about my experience. Will share the link here when it's done. Regarding Madhusudhan's question, yep the atmosphere is electric. But on tv you have the option of following everything. So pros and cons in both. I would definitely advise that being over there is much more fun!
Moreover, now you can carry a smart device with you and stream whatever you want to follow, a lot of people were doing that. Let's Tokyo 2020!