Originally Posted by
tonto_b
Hi,
I have a choice between a 1hr05mins lay over or a 7hr05mins in FRA en route from DUB to SIN next April. We're flying in C so will have lounge access, but 7 hours is a long time even with free booze and gummi bears. I think 1 hour is too short for my comfort. If it was a business trip I wouldn't mind, but it's my holidays and I like to eliminate as much as potential stress as possible. The later departure from DUB leaves at 18.05 so plenty of time for air traffic backlogs to develop. I think it's a no-brainer to choose the earlier departure? I've never left an airport during a layover before. I assume I can just walk out and back in again with my boarding pass for the next leg?
Not quite, but nearly

.
Since neither DUB not SIN are in the Schengen area, you'll have to clear immigration (twice - leaving the non-schengen airside and going back there), and you'll obviously have to re-clear security on your way back in. It follows from there that you require a passport that allows you to enter Germany without a visa (or a valid Schengen visa).
Otherwise no problem, assuming you're on LH/*Alliance and your luggage has been checked through to SIN.