Despite all the recs for Selvatura, I picked the Original Canopy Tour because I specifically wanted to climb up the strangler fig. My husband and i did the tour in the pouring rain (they only close down during lightening storms), which would probably deter most folks but it turned out to be ridiculously fun. The weather meant that certain sections had brief moments where we were ziplining through dense clouds - it was thrilling but I always felt safe.
As for that strangler fig, climbing up it was great, though you don't actually stay inside it the whole way up. Halfway up, you crawl out and then ascend the rest of the way up a metal ladder tied to the trunk exterior. I really enjoyed it but it's one of the more strenuous parts of the tour so folks who just want to swing or glide should probably skip it if they can.
BTW, the company offers transportation, which makes it convenient if you don't have a car. Oddly, our driver made a quick stop at a local bank between picking us up and dropping us off at the zipline site, and on our way back, he also made a quick stop to pick up someone who seemed to be an elderly relative. We were the only other people he was driving and he asked us if it was cool - each time, it didn't add more than a few minutes to the ride so we didn't mind but it was certainly unexpected.