They will give you a free session to try. Orangetheory has three rows of equipment: treadmills, water rowers, and the floor (with dumbbells, benches, TRX, mats and BOSU balls). They have classes that use all three, and if you sign up for one such class, I recommend starting on the treads to get warmed up before proceeding to strength training. They also have classes where you do all treads or all strength.

The coach will definitely modify the exercises for you if you ask. For example, I cannot do pushups on the floor, so I do them with a TRX instead, per the modification from the trainer.

I highly recommend them as a medium price point alternative to personal training.