An initial allocation of 1060 tickets to go on sale tomorrow [20/11/18] prices as follows
Adult £22
Over 60 £15
Under 22 £15
Student £15
Under 18 £10
Valley Away will be running a coach service to the Ricoh,[hopefully a service back as well] priced at £19. Full information on pick-up times and locations is available to view below.
Larkfield: 9am
Gravesend: 9.25am
Dartford: 9.40am
Bexleyheath: 9.55am
Bromley: 10.25am
Eltham: 10.45am
Charlton: 11am
There are no trains from London to Coventry on Boxing Day.
https://www.cafc.co.uk/news/view/5bf2f1bc32a68/tickets-for-charltons-festive-fixtures-to-go-on-sale 
Comments
You can drive from there to Coventry in 2h15.
After being on the coach at Dartford for 1hr20 your in Charlton with another 2h15 in front of you.
We need the love sport radio phone in to get @cabbles on the programme or 31 year old man to dedicate a whole night to the coaches
Even a 1pm ko would help at least you could be home for 5.30 ish
Stoke away twice I believe.