If you want to transfer tokens using their TON network platform, you must transfer tokens with a fee. You can never make token transactions without paying a network fee. Currently most tap tap bot airdrop campaigns are on the TON Network blockchain in which case you must have TON in your wallet so you don't have to worry about your network fees later. You can feel free to recharge enough TON in your wallet without any problem. But remember one thing keep your wallet phase safe so no one can access your wallet. If someone else can access your wallet then in that case you will lose everything which will be completely risky.