You’ll have a top time.
Easy to watch elsewhere. From T34 you can go uphill to the Dunlop bridge. Stay on the inside or go over the bridge and you can easily wander up to Tetre Rouge. Or walk down hill to go under the track to go to near the Ford Chicane. On the outside you can wander all the way from Tetre Rouge to the end of the Porsche Curves. Easy peasy. After the initial rush at the start a bit of patience and you can get to the front to watch. Or stand further back and get a wider view.
You can also get to Arnage or Mulsanne Corner. Drive or get the bus that is laid on (I’ve never done the bus).
Behind T34 and up the hill is the village. Lots of shops and food outlets. More shops under the grandstands opposite T34.
Loads of food outlets everywhere. Queues can be long at popular times.
You can park next to your tent if you are camping. Where are you camping?