Planning to go on a two-week trip in Late Feb / Early March next year with a multi-city booking in place below:

LHR - MEL 25-Feb
SYD - SIN 04-Mar
SIN - LHR 10-Mar / 11-Mar

Planning to stay in Melbourne from 27-Feb to 01-Mar followed by Sydney 01-Mar to 04-Mar including Mardi Gras weekend. Then one night in Singpoare on 04-Mar before heading for a beach holiday either in Phuket or Bali (open to other beach holiday destinations) from 05-Mar to 08-Mar. Fly to Bangkok on 08-Mar and spend a weekend there before flying back to Singapore around 10-Mar.

I will be travelling on my own and have only been to Bangkok in all the above places mentioned before. Grateful for any suggestions or tips in relation to my current itinerary. Thanks!