I didn’t eat at the 7 restuarant, but they allow football shirts at the restuarant. So I imagine it’s relaxed.

We have always enjoyed the food. Unfortunately we have no knowledge of the vegetarian standard. Email them direct,you will get a positive response.

Get there early enough you can park at the Pizza Hut restaurant just beside the ground. The it's a couple of minutes walk across to the stadium

Yes

I have had an answer from Celtic and this is what they are saying if you want tickets get in touch with Celtic park ASP      Dear andrew Bennie, At this time, we are receiving a high number of emails and will respond as quickly as possible. If your query is of an urgent nature, we advise that you call the Customer Service Line on 0141 230 1967. Please follow the Ticket Office on Twitter for up to date sales information, @celticfctickets We will respond to your email as quickly as possible. Kind regards , Celtic Ticket Office.

There’s a great view from that section enjoy the game Hail Hail

The nearest train station is Dalmarnock which is a ten minute walk to the stadium. Depends where you are coming from but this is the closest railway station