You're more than welcome to come alone or with your team. It's completely down to you what you do, if you want to stick with your team then that's fine. Normally everybody just plays when they are ready to go out, whether it's 5 on 5's or 2 on 2's you just play as many games as you want, if you're ready then go out but if not go out on the next one. It's very relaxed and if you do come on your own then everybody will make you feel welcome.