I always do on the tongue unless there’s a hygienic reason to not do so, such as me being sick. I also will take the Precious Blood if offered unless, again, I have a hygienic reason to avoid it.
At my old parish, hand vs. tongue it was very split, but most received on the hand, and I would say a good majority also took a sip of the Precious Blood. I visited a parish today that’ll probably become my home parish that had altar rails. It looked like most received on the tongue, but the couple next to me received in the hand. The Precious Blood was not offered as far as I could tell. It felt weird to not have it, but I know that it isn’t necessary.