I will get informed whether the transaction is a success or a failure and if it failed than why (basically it's caused by the lack of "energy"). If you are "out of energy", you can deposit more TRON to your wallet. Because every transaction will need "energy.

Yes we need some TRX in our wallet to do all those activities. For each activity we get notification so we understand very well what going on and how much time it take.

Nice explanation from you. Great entry from you.