In the first question, you need to define a different post id in each form. for example new_hotel, new_tour and new_karbar. Then in the pre_save_post filter you check for this value and do something different depending on what you want to do. The reason that only your last filter is working is because all of them are running on every post created. All of them are doing what they are supposed to be doing but you’re only seeing the results of the last change.
As far as the second question, what type of field is causing array. Some fields store array values and you need to account for this.
