So, if I choose 1 Month holding period, where those 2,500 FUN go after 1 month has passed? Will there be a wallet for them on freebitco.in? And if yes, will there be an option of betting with them?
This is just my impressions but from what I've read right now you buy and receive a discount on FUN and Freebitco is holding these for you till March 15th then it goes live. At that point if you want to sell back to BTC then you can, it will also lose you any holding bonus from having the FUN token on your account. In some cases a bigger user of the site will actually be better off to not sell just hold the token and receive enhanced benefits hence its labelled as a loyalty or premium token for this site.
Outside of Freebitco its also a freely traded token on various exchanges, so its long established in that way. Such a large site as this backing the usage of the token has bought the price back to rude health and presumably supports it long term in line with holding benefits given. I'm not yet clear if FUN token works beyond buy/sell function in this site, perhaps theres deposit and withdraw but my current guess is no and also no to your question on gambling the token instead of using BTC but its possible I read it wrong but I presume it just keeps things simple that way.