It's a lot like going to the dentist in your day. The trips last about 2 hours but are extremely painful. Physically and mentally exhausting. Some people have ended up in legal trouble for not wanting to make the return trip claiming they can't handle it. The only thing that keeps anyone from overstaying is that we need to drink the water of our time, if you run out of supplies you will die of dehydration. There is no problem with food.

You are not hidden anywhere when you travel. When you transport you are literally doing that. These trips need large amounts of energy but the sun provides it.