You know those people on Instagram who are always traveling to fabulous places, making you wonder how they afford it, and why you aren’t doing the same thing? This week we’re getting all of the answers — and travel savings secrets — from Rachel Rudwall, an Emmy-nominated on-camera host and producer, who has traveled to all seven continents, lived in three countries and journeyed through nearly 70 nations — all on a limited budget. She’s got millions of airline miles and she knows how to use them. In Mailbag, pensions and other retirement savings strategies.