As you know, M has a tube. We started out with an NG tube, then an NJ and then a GJ and now she finally has a G and a J. Needless to say, we can answer any tubie questions you have!!
The tube has been miraculous for M. She thinks it's MUCH better than having an NG/NJ tube. I will say that the J tube has been harder to deal with than the G or GJ tubes.
The G tube surgery was not too bad. She spent two or three days in the hospital, but some kids are out after just one night. The tube was placed by interventional radiology. The first two days were rough - she needed IV pain meds - but after that we were able to switch to oral pain meds.
Things that used her abdominal muscles - sitting up, coughing, laughing - were painful for about a week or two. It got much better after the first two days.
The website feeding tube awareness has a lot of info about tubes and about the G tube surgery.
M has gained 25 lbs since she got a tube and is doing GREAT in terms of her weight. Her bone density increased significantly (she had osteopenia prior to the tube) and she has a lot more energy. We haven't ever regretted the tube, not for a moment!
Good luck with Stelara - I hope it is Caitlyn's magic drug.