Reserve funds serve for all purpose and act as a safety net for unanticipated circumstances, when you are building your Bitcoin investment is proper you have a reserve funds. However to correct something reserve funds don't have a especially place or circumstance to use it for any unanticipated circumstances that comes up you can you your reserve funds to handle it, it could be for fun for example you are to attend a birthday party and you need money so you can use it to buy drinks and other things you can dip hands into your reserve funds for that, reverse funds is different from emergency funds emergency funds are only for emergencies purposes so let no the difference and it's always advised to have a strong emergency, reserves and float funds in other to make your Bitcoin accumulation journey a successful one because without all this funds in place you will be tempted to dip hands into your Bitcoin investment.