thinking of booking two sessions of 90 minute massage.

Has anyone tried such long massage? How was it?

I've had 2 hour massages before. In the right hands, it's a wonderful experience. In the wrong hands, it can take days to stop hurting (but that's true for even a 1 hour massage).

In general, for any massage+HE session, the HE is X minutes and the massage is everything else, regardless of the length of the session. For many providers, X is about 10. Some are longer, some shorter. But if you make the session longer, don't expect the HE part to be longer.

If you want a longer HE, I'd suggest discussing it with the provider (and if in the US, wait until your 2nd session and do it in person, to avoid LE suspicions). Similarly, if, like a lot of punters, you enjoy a "happy beginning" to get yourself relaxed, then a nice long massage, then a  happy ending, just discuss it with your provider. Some may want to vary the price for that, others will just want to make you happy so you come back more often.

Longest massage I had was about 3 hours in exceptionally good hands, completely legit. So, find someone well-reviewed, and give it a try.

Gherk

I had not considered what the scenario would be like if it was a bad massage. Will try finding one with good reviews. Seen a lot of SPAs offering 2 hours, that seems like a good fun/place to start.

Would be in HK for it. Wasn't thinking of extending the HJ, must be tiring to do so 20 min in one go for the lady. Will discuss with them, luckily there exists whatsapp/wechat/line/viber/etc =)

Thanks for the great reply!

Why don't you separate the two out?
Go to a massage place for a massage then to a girl for a fuck.
Relative strengths I say.

Or

Just go to Macau