Do we postpone? ?

If your partner is adamant that he won't go ahead without the big party, then I don't think you have much choice but to postpone and hope things get better. It might be worth pointing out to him though, that until a vaccine is widely available, there are no guarantees that covid won't affect a date later in 2021 or even in 2022.

In your place, I'd be going ahead with whatever was possible on the original date and look to have a bigger celebration later in the event that covid limits the celebrations on the actual wedding day.

I totally feel your pain! Our wedding date is 27th Feb and we're getting increasing anxious about it. There's no way we could cut our guest list down to 30 so if restrictions are still in place we are going to move it to 2022 (sadly no more 2021 dates available at our venue). Even if our guest list was small enough, I feel like all the rules and regulations (face masks, social distancing, no hugging, no dancing) would just take all the fun out of it for us. If you can put up with these things I would say definitely try and convince your partner to go ahead with the ceremony as you're lucky you have a small guest list so wouldn't have to cut anyone off! Then you'll still have your party to look forward to at a later date

I am also worried about whether we have to postpone our honeymoon plans. We were looking forward to this occasion for almost 2 years and have booked kerala honeymoon packages in advance.