We went to Oahu and snorkeled in Hanauma Bay last year, it was great. One of our daughters husbands was stationed in Pearl and she was graduating from leeward with no one there to celebrate with her as her husband was underway so we had to do it. It was a crammed in trip because we could on get away from the business for a few days but she had a car and knew the island well so we probably saw more than most would if they had been there for a few weeks. The Mrs fell in love with snorkeling though so we will definitely be coming back when we can.
A vape meet would be great there but the hard part is that so many vapers on on the east coast which means a quarter way around the planet trip for them.
Gerry, the 15mm tanks have a thinner wall just so you know, the glass is about half as thick as out other tanks.
Capacity is going to be around 0.4, 0.8 and 1.2ml for HalfLing, Standard and XL. I have not listed these yet as I have not taken good measurements. I have meant to purchase some small syringes for this to be as accurate as possible but the few times I have ordered vaping supplies the stores i was shopping at were sold out. I know I have some around here somewhere and will try and find them but I think those amounts above should be fair estimates. That is of course not counting the cartomizer, just what is in the tank as is with all of our measurements.