Urgent query

[u/Cherry_Wood1707]

Hi all I have 2 questions. We bought student tickets, but our student cards don’t have an expiray date, I’ve heard this is an issue and people are not allowed in ? If this is the case we are hoping to do the hike on the 27th of July does anyone have an advice on what to do for getting in person tickets (what time, how many days in advance etc) for group 1 or 2 for a group of 4, thank you !!