When you are putting your bowling shoes on, be sure that you move them as far away from walkways as possible, to avoid anyone tripping on them. If your street shoes are wet or dirty, be sure that you take them off as far away from the lanes as possible. If you track water, mud, or anything else onto the lanes, then you run the risk of you or someone else falling flat on their face.
If you need to use another person’s ball because your ball is stuck, then simply let the next bowler on your lane know. Their ball may hit it, or theirs may become stuck too. If their ball becomes stuck too, go up to a worker and tell them that you have a couple of bowling balls that are stuck. It may take awhile to get them back, but it may also avoid someone from becoming upset that their ball was used.
If you need to use the bathroom, try and time it out so you have a minute before your turn, and go as quick as possible. If you feel comfortable doing so, you can also designate someone to bowl for you if you do not come back in time so that no one is kept waiting.