The 16.57 EX London Bridge, forming the 17.11 ex East Croydon to Hove arr. 18.00 SN is this likely to be a jam packed service this Friday 1/5/15 and am I likely to have trouble boarding this service at East Croydon (or getting a seat)? How many coaches is this service normally booked for? I'm a bit worried about not being able to get on it. I cannot get an earlier service as all my connecting trains before that are on an Advance ticket. Really do need to be there fore 18.00.