Which one is the best way to explain? or correct?
Which one is the best way to explain? or correct?

Situation: there are 5 vending machines (frome the left ,1 .2. 3. 4. 5 )and only 5th vending machine is available to buy one-day pass.

1:You can buy one day pass only at the vending machine on the far right.

2:You can buy one-day pass only at the farthest vending machine on your right.

3:You can buy one-day pass at the only available vending machine selling pass located at the farthest right.

Question

Which one is the best way to explain? or correct?
Which one is the best way to explain? or correct?

Situation: there are 5 vending machines (frome the left ,1 .2. 3. 4. 5 )and only 5th vending machine is available to buy one-day pass.

1:You can buy one day pass only at the vending machine on the far right.

2:You can buy one-day pass only at the farthest vending machine on your right.

3:You can buy one-day pass at the only available vending machine selling pass located at the farthest right.

Answer

#3 is too complicating! #1 is more straight forward and would better suit as an instruction.

Or you can say "Day passes are sold only at the last vending machine to the right."

For instructions it is good to keep sentences as concise as possible, especially in high traffic areas like a bus or train station.

Hope this helps.