Do most people use the AWS vpn? is this the recommended option?
Many people use it, yes, but you should buy a better VPS. You can get a good enough VPS for 10$ a month.
Are there licences available? If i get a licence, can i use it both on my Mac and Windows laptop? (one at a time)
Yes there are licenses available for Poloniex, Kraken and Bittrex. Yes you can use it on both laptops, one at a time, but a VPS is recommended.
thanks for the info. i've dived into this.