I've heard that messing up a Delaware C-Corp can lead to huge tax bills, but I also know investors hate LLCs. Since I’m new to startups, wouldn't it make sense to just use Stripe Atlas or Clerky instead of trying to DIY the legal stuff and risking a disaster?

I'm traveling to Europe and need a Forex card. Which card offers the best combination of zero markup fees, reliable customer support, easy reloading, and airport lounge access? Any additional travel tips are welcome.

I love to travel, and mostly i travel through American Airlines. Looking over their credit card, i can't use points much much for anything outside their specific benefits. 
For travel related points collections, which is the best card? Or should i just use the American Airlines credit card?