Seasons don't determine if you will invest or not. festive season might be the best season or the worse season, it all depends on the movement of the market in that season. In my own opinion, i don't think festive period is a good time for anything crypto investment, during this period the market movement is unpredictable. So you should probably stay away from crypto investment during festive period.
The market has always being unpredictable and that's why it's risky, so I don't see how you will be able to predict the price movement of bitcoin when it's not festive period. Festive period is time to stay with your family and have fun because it's once in a while. During this period it's always a generous time and good food will not be exceptional. This is why I wouldn't buy bitcoin if I don't have extra funds on me, because it's holiday.