I have a trip in June leaving from BKK - NRT JL718 at 0025a. The JAL site says check in is from 2125p to 2345 . Flight JL34 from BKK-HND leaves earlier at 2155p with check in from 1900p to 2115p. Will they let me check in for my flight when the counters are open for the earlier flight? I know some airlines and outstations have strict rules. Thanks for any info.