Alex is great.
Very friendly.
Thai massage is different that other massages: it involves lots of stretching and your masseur may crawl or even step on you. Don't worry, Alex is smaller (like 5'6 or 5'7). Make sure you communicate your pressure preference clearly (English may not be their first language). If you're not super flexible or have limitations you'll want to communicate that as well.
If your muscles are "cold" you may want to warm them up before your massage. The room may be a little cold too and draping is minimal, though tables may be heated.
Make sure you're comfortable, communicate and enjoy.