Nothing, there is nothing that anyone should worry about. If anything, you might have a day of confusion if the fork went really off the chain, lol. There is nothing that is going to hurt your wallets, although a trusted online wallet is the easiest place to ride a fork out as that leaves the site to deal with any issues and not you. But, make sure that you really trust a site, because potential scammers love to use excuses like this is bail with their clients wallets.
To me i do not have any specially planning, but going to hold my bitcoin . I in fact in favour of long term investment and therefore do not giving preference to sell my bitcoin. I am holding my bitcoin at least for next 3 to 4 years, because bitcoin has a very bright future and its price will continue increasing for a long time. Therefore i think long term investment is more profitable as compare to short term investment.