I decided to buy a nice looking but simple (and cheap

I am not sure if I can post links here, so if not, I apologise, but basically I was looking to buy the following:
https://www.amazon.co.uk/Bonsai-Elm-par ... nzaai+tree&
I am also buying a special scissor and food.
It is a 7y old Elm, and it says that it is an indoor Bonsai. The reviews are quite solid. However, I am planning to buy it as a gift and basically a bad gift can be worse then no gift. So my questions are these:
1. I have read that Elm is not an indoor but an outdoor Bonsai, however, the description of the product says that its indoors. Are there different types of Elms in that regard?
2. How easy/difficult is it to transport a bonsai on a train? Are there special boxes that one can buy etc?
3. How much work is it?
4. Does it really have to be watered every day, can one skip a weekend every 2-3 months?
Thanks all in advance.