The guys who have given the advice are knowledgeable and experienced.
I would however just advise you take a couple of steps:
Be prepared for it not starting and at least have an action plan of what you’ll do, which given the 911 experience you’ll likely have. Jump start is ok, but flat batteries destroy themselves and the F Type doesn’t take well to low voltages.
Depends how soon the trip is but I’d stick a voltmeter in the battery and get a reading after as long as you can leave it without starting. That will tell you the rate of discharge, if it’s still 12.6v or more then no issue. If lower then post here and I can tell you the discharge rate
Incidentally mine will last a max of 2-3 weeks before failing to start. New battery, charges well and uses a ctec to keep it in good condition..