I'm always alone out there with my gears, but groups can be fun too if you are creative in enhancing the atmosphere. instead of seeing everyone shooting the same subject, i'd rather shoot those photographers or their gears with my telezoom. sometimes you'll laugh at their style and facial mimics prior to pressing that shutter. different ppl, definitely different style. you may learn something different along the way.
I find that 80% of the time spent photo taking with my friends actually involve mostly non-photography activities (chit chatting, debating on where to go before detouring to catch a movie after having decided on the location, eating and drinking etc. etc.).