It is harder on your own. I flew from the UK to Australia alone and it was much harder than flying the other way with someone else.
Make sure you tell the hosty that you're alone. On the Dubai - Sydney flight I was really confused because the hosties kept giving me wierd looks when I asked them to do stuff and I couldn't understand why they weren't being really helpful like the hosties on the first leg - it was only towards the end of the flight that they realised that I wasn't travelling with the guy I was seated next to and they suddenly got more helpful and offered to look after him while I used the bathroom and so on.
If I'd been smart enough to tell them that I was alone at the beginning I would have had an easier flight.