Approximately an hour to an hour and a half. Before you start go to your Hardware Store and ask for instructions. It's not all that hard. Also you'll need to rent a tile cutter. You always start from the middle of the floor and work outwards, so the tiles closest to the walls and tub you will need to cut the tile.
Dangerous - electricity and water don't mix. But how long do you spend in the bathroom?
novice
Use the bathroom somewhere else.
This depends on the temperature and the aeration of the bathroom.
Usually by the first or second bathroom trip outside.
Most bathroom countertops are 5-7 feet long.
As long there is an experienced adult hiker around to supervise the novice hiker at all times, then it should be fine. However, make sure you notify others as to where you are going.
1 hour
There is no standard bathroom counter. Bathroom counters come in all shapes and sizes, according to what the client wants
in a public bathroom, standing up There is no medical recommendation on this as long as the toilet is clean. If it's not you can squat.
A tub is six foot long, so if you have the tub along the end of the room, then the minimum width would be six feet. You could possibly fit in a small sink and toilet if the room is 7 foot long, but it would be tight. Also, you would have to make sure that the door would clear the toilet. Renting, or buying, people do not want the smallest possible bathroom.
If you are refering to longnecks as in "longnecks down" it would be refering to a beer bottle with a long neck.