So I travelled in this train on 5th February 2021 from SBC to MAS.
Booked online ticket on 4th Feb for ₹171.80 (₹11.80 included) then later regretted that I should have booked during the opening of current window.
You can easily get tickets of this train on last moment.

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SBC I went to IRCTC Kitchen (Dakshen Restaurant) which is at PF1 only, I ordered Lemon Rice (₹40) Its taste was awesome.

Then I boarded the 06080 Brindavan Express D13 36 Window Seat Track Side. Coach's maintenance was superb, charging points were working and the space near the door was too much.

Train departed SBC right on time and #30393 RPM WAP-7 was doing the duty.

Train's run was awesome all the way and at some stations it was before time, the route was full of scenery. I guess during the monsoon, this route becomes heaven and full of greenery. There is a pantry car attached in the train, you will not face any shortage of food. Then we reached Jolarpettai Jn where 03352 ALLP-DHN made a parallel entry with AJJ WAP-4.
At Jolarpettai I purchased medu wada 3 pieces worth ₹30, it was tasty, infact all the veg food I tasted in south was very tasty. After JTJ, legendary station Vaniyambadi came (those who play Indian Train Simulator can relate it very well :D ). After that Katapadi Jn. came, just after departure from Katapadi you will see VIT Vellore Campus on right side (i.e Track Side).

Then the sun sets and you can now only enjoy 110kmph action. After that one major station came i.e Arrakkonam Jn. and after AJJ you'll see parallel runs with EMU's.

At sharp 20:55hrs train arrived MAS on PF3 and on PF2A SBC-MAS Double Decker was standing.

Here my journey ended and later that day I boarded 02621 MAS-NDLS TAMIL NADU EXPRESS at 22:00hrs till NGP.
I will post its experience soon.

I'll be attaching pics too in this post do go through it.

Thanks for Reading _/||\_

Retiring rooms at SBC are outsourced to some private company (can't recall the name) and are maintained average... (Over all citing exterior, room interiors of both AC and Non AC).
1. After you enter the station (dont enter the PF, PF 1 side) from taxi drop/pickup point, move right, beside milk parlor you will see stairs. Take that and go to the reception situated on 1st floor. (Do take a look at the wall paintings on the walls of station interior from here) Fill a form and mention transaction id, amount paid, phone no. and after entering details, manager will give you the keys.
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A. Pic 1&3 are of Suit C which cost around 1000 (actual 998 after 5% discount on online booking) for 24 hrs. The room was well maintained. The beddings were clean with not the usual Railway blankets (2 fluffy soft blankets are provided). The toilets were OK with hot water tap which worked. The TV displayed all the major channels. So worth the price. From the corridor of Suit rooms and deluxe rooms, one gets a view of SBC station PFs.
B. Pic 2 &4 are of non AC room which cost 600 (570 on online booking). This room was somewhat not good. No TV (despite mentioned while booking), loose plastered walls which had fallen from here & there, some creaky furnitures. Toilets were same as of AC room/suit and were clean. The price was not at par for non ac room.
MY TAKE : If you wanna go for Suits, book it. Non Ac rooms are not worth the price. In that price one can get a better room in nearby hotels.

I travelled on this train recently, I provide the timeline of what was happened during the entire journey.
** 6 AM train departed from Chennai Central at 6th Platform.
** Within few minutes they provided the Railneer bottle and followed by Newspaper (optional Language)
** Before Arakkonam they provide a plate with MarieGold biscuit packet (2), a hot water cup and a pouch of...
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tea items which includes( milk powder, Sugar, tea bag and a tea stirrer.)
** After the train arrived at Katpadi they provided the breakfast I opted for Veg so they provided the ( 1 Vada, Pongal, a pack of sambar) very less quantity and average quality.
** After the Jolarpettai Junction they provided the hot beverages( Tea and Coffee) again.
** By 11.10 AM, Train reached the Bengaluru City at the 7th Platform.
** Including food option my ticket price was Rs. 735 /-