I can't predict BO, but I'll try n analyse other aspects
1- SRK's accent is restricted to his older version only, his kinda energy is there which was amiss in Dilwale, JTHJ, Zero etc
2- Humour seems to be on point (plus the mispronunciation humour is lapped up in masses)
3- Vicky Kaushal death scene can do DP in Jawan trick
4- Timing of the film is good imo, the action fatigue would be visible, Animal for all its records alienated the family audience making them feel left out, FOMO ke chakkar mein movie dekhna chahenge 
5- Music- this is hands down Hirani's best album, which will work big time once the film released.
6- Topic is too relevant to fail.
7- If SRK fans believe that corporate booking nhi ho rhi hai, they are fooling themselves or they are too NRI
coz for a fact he has done it for the opening weekend, which imo is a brilliant AF strategy as it creates a FOMO esque euphoria, giving the movie an insane initial momentum. Tiger 3's opening (which was arguably massive) sealed it's fate of being an underperfomer purely coz comparisons were gonna ruin it.
8- RCE has saved all the promotion n marketing ka paisa for a reason 
9- Hirani & Abhijat Joshi have evidently spent a lot of time on this script (Munnabhai 3 ki rehashed script hai I feel)
So opening 45 Cr+ (Tiger 3 se 1cr zyada
)
LT Gadar 2 cross
35