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Best answer
10
3 nights Hat Yai not too long — Fri bazaar Sat Kim Yong Khlong Hae Sun Songkhla old town Mon shopping massage before train. 2 nights rushed Khlong Hae + Songkhla skip. Malaysian long weekend Fri-Mon ideal. Repeat ASEAN bazaar different stalls second night OK. Central Festival VAT half day.
3
2 nights enough food only — 3 if Songkhla + shopping haul.