Deccan Queen - मेरे सपनों की रानी

Hello IRI, only a few more days remaining for my RF trip in the following pnrs. Please do join me and lets enjoy the journey together. A super long trip along the amazing routes of Indian Railways. 10 days away from work and its just me and trains. A time to rediscover myself :P
1. MAS - SRR -> /pnr/post/3493514
2. SRR - NIL and NIL - SRR -> Passenger trains
3....
more...

SRR - MAO -> /pnr/post/3359224
4. QLM - AGC -> /pnr/post/3493473
5. AGC- NZM -> /pnr/post/3493480
6. DEE - UHP -> /pnr/post/3493484
7. UHP - SVDK -> /pnr/post/3493491
8. SVDK - CDG -> /pnr/post/3359231
9. CDG - KLK -> /pnr/post/3493518
10. KLK - SML and SML - KLK -> In toy trains
11. KLK - DLI -> /pnr/post/3493494
12. NZM - MAS -> /pnr/post/3114856
I have never been to most of these places and have a few queries. Please help me if you know the answer
1. Where is the ticket counter in SRR for buying tickets towards NIL
2. Where is the AC waiting room located at AGC
3. Where is the AC waiting room at DLI / NZM and which one is better
4. Any other travel tips for me?