You mentioned 5 nights in Vietnam and 5 nights in Thailand but provided dates 2025-04-05 to 2025-04-12 (which is 7–8 days). Do you want Apr 5–Apr 12 or Apr 5–Apr 15 for 10 nights? If Apr 5–12, would you prefer I design a shorter split (e.g. 4 nights Vietnam + 3 nights Thailand or 5 nights Thailand + 2 nights Vietnam)?
Confirm pace (fully relaxing vs a few excursions), any mobility limits, and if you prefer direct flights only or are okay with short domestic connections.