All is good as long as : Trump/Biden is president (not Sanders), Fed keeps rates low (projected to stay at historic lows for a year or two), energy prices stay under control (looks that way), and no major virus issues. The prospect for all this to happen is promising right now.It is still not too late to invest. Look at the 52 week highs of most of these companies. You are not buying at the historical tops today. If you are still feeling antsy, have some extra cash for dips but do not let success scare you out of investing.
Carnival cruise lines will go up from these levels. So will Disney and Exxon and others that got hit. Take a look at banks at these levels. Hasbro is off its highs. Also consider stocks that thrive in a second wave of covid. JNJ. Chlorox, UPS, Amazon. All are good.
The fact that the US is by far the leader in digital/internet economy should keep the US stock market humming for at least the next couple years. Cheers!!