Hi, I wanted to start and say that I have learned so much on this site. We are heading to the Fort for the first time next summer and I am so confused on the different levels of loops. I have looked for the answer to this question but I have not been able to figure it out for sure. Are Loops 100, 200, and 300 the only preferred loops. We want to be within walking distance of the Settlement Depot and the Marina. Thanks.