need recs for a thai kpop-haul

hi guys! i'm coming to bangkok for vacation soon and just wanted to gather some recommendations on best kpop-shops in the city ♡ 1) i already keep a mind a couple of spots i've seen on tiktok but what if i'm missing something crucial? any hidden gems maybe? 2) i'm more interested in pcs rather than in albums themselves but as far as my research has gone there're no such spots where you could just pick some pcs based on group, are there? will be happy to mistaken 3) could you please tell me how fast do the new releases reach you physically? like is it day to day or does it usually take some weeks to arrive? i'm looking forward to a particular album which will be out three weeks prior my arrival, so now i'm contemplating between making a pre-order from my home country and therefore getting some guaranteed pobs or try to find it in thailand stores in case it sells there… any piece of advice will be highly appreciated! x