We are stoked to hear that you are considering using us again for your stay. The no credit check plans are great but may not be the best for your specific situation. There would be a Sim starter kit fee for each line ($25) as well as deposits for each line $50/$30/$20/$20/$20. These deposits are fully refundable but the upfront cost of starting with a no credit check plan is going to be greater than it would be if each of your 5 lines activated on one of our pay in advance plans. It is funny that you mention that you will be here for 3 weeks as we have a Tourist plan that is a 3 week plan which gives the line unlimited data with 2GB of 4G LTE data, unlimited domestic and international texting in the US to 140+ countries and destinations, and 1000 minutes of domestic talk within the US. Also, there is no charge for the SIM starter kit so that is $125 saved right there if you are activating 5 lines. You can check out more information on our tourist plan here Tourist Plan.
Once you get to the US, you can stop by any T-Mobile store and they can get you activated very quickly.