Originally Posted by
Gamecock
I have never had an issue waiting for a shower at T5. Granted my sample size is only 12.
Even if you do have to wait fo 30-45 minutes I think any time spent waiting would be offset by the time and aggravation of clearing customs and immigration to visit the arrivals lounge.
I've also never had to wait for a shower. I think you'll be fine and it's not worth the hassle of going through border control twice.